diff --git a/common/api/common.klib.api b/common/api/common.klib.api
index d26881891af..9308b8f8f82 100644
--- a/common/api/common.klib.api
+++ b/common/api/common.klib.api
@@ -877,7 +877,7 @@ final class dev.kord.common.entity/DiscordActivityTimestamps { // dev.kord.commo
 }
 
 final class dev.kord.common.entity/DiscordAddedGuildMember { // dev.kord.common.entity/DiscordAddedGuildMember|null[0]
-    constructor <init>(dev.kord.common.entity.optional/Optional<dev.kord.common.entity/DiscordUser> = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., kotlin.collections/List<dev.kord.common.entity/Snowflake>, kotlinx.datetime/Instant, dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ..., kotlin/Boolean, kotlin/Boolean, dev.kord.common.entity/GuildMemberFlags, dev.kord.common.entity/Snowflake, dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ...) // dev.kord.common.entity/DiscordAddedGuildMember.<init>|<init>(dev.kord.common.entity.optional.Optional<dev.kord.common.entity.DiscordUser>;dev.kord.common.entity.optional.Optional<kotlin.String?>;kotlin.collections.List<dev.kord.common.entity.Snowflake>;kotlinx.datetime.Instant;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>;kotlin.Boolean;kotlin.Boolean;dev.kord.common.entity.GuildMemberFlags;dev.kord.common.entity.Snowflake;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.optional.Optional<kotlin.String?>;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>){}[0]
+    constructor <init>(dev.kord.common.entity.optional/Optional<dev.kord.common.entity/DiscordUser> = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., kotlin.collections/List<dev.kord.common.entity/Snowflake>, kotlinx.datetime/Instant?, dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ..., kotlin/Boolean, kotlin/Boolean, dev.kord.common.entity/GuildMemberFlags, dev.kord.common.entity/Snowflake, dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ...) // dev.kord.common.entity/DiscordAddedGuildMember.<init>|<init>(dev.kord.common.entity.optional.Optional<dev.kord.common.entity.DiscordUser>;dev.kord.common.entity.optional.Optional<kotlin.String?>;kotlin.collections.List<dev.kord.common.entity.Snowflake>;kotlinx.datetime.Instant?;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>;kotlin.Boolean;kotlin.Boolean;dev.kord.common.entity.GuildMemberFlags;dev.kord.common.entity.Snowflake;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.optional.Optional<kotlin.String?>;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>){}[0]
 
     final val avatar // dev.kord.common.entity/DiscordAddedGuildMember.avatar|{}avatar[0]
         final fun <get-avatar>(): dev.kord.common.entity.optional/Optional<kotlin/String?> // dev.kord.common.entity/DiscordAddedGuildMember.avatar.<get-avatar>|<get-avatar>(){}[0]
@@ -890,7 +890,7 @@ final class dev.kord.common.entity/DiscordAddedGuildMember { // dev.kord.common.
     final val guildId // dev.kord.common.entity/DiscordAddedGuildMember.guildId|{}guildId[0]
         final fun <get-guildId>(): dev.kord.common.entity/Snowflake // dev.kord.common.entity/DiscordAddedGuildMember.guildId.<get-guildId>|<get-guildId>(){}[0]
     final val joinedAt // dev.kord.common.entity/DiscordAddedGuildMember.joinedAt|{}joinedAt[0]
-        final fun <get-joinedAt>(): kotlinx.datetime/Instant // dev.kord.common.entity/DiscordAddedGuildMember.joinedAt.<get-joinedAt>|<get-joinedAt>(){}[0]
+        final fun <get-joinedAt>(): kotlinx.datetime/Instant? // dev.kord.common.entity/DiscordAddedGuildMember.joinedAt.<get-joinedAt>|<get-joinedAt>(){}[0]
     final val mute // dev.kord.common.entity/DiscordAddedGuildMember.mute|{}mute[0]
         final fun <get-mute>(): kotlin/Boolean // dev.kord.common.entity/DiscordAddedGuildMember.mute.<get-mute>|<get-mute>(){}[0]
     final val nick // dev.kord.common.entity/DiscordAddedGuildMember.nick|{}nick[0]
@@ -910,13 +910,13 @@ final class dev.kord.common.entity/DiscordAddedGuildMember { // dev.kord.common.
     final fun component12(): dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> // dev.kord.common.entity/DiscordAddedGuildMember.component12|component12(){}[0]
     final fun component2(): dev.kord.common.entity.optional/Optional<kotlin/String?> // dev.kord.common.entity/DiscordAddedGuildMember.component2|component2(){}[0]
     final fun component3(): kotlin.collections/List<dev.kord.common.entity/Snowflake> // dev.kord.common.entity/DiscordAddedGuildMember.component3|component3(){}[0]
-    final fun component4(): kotlinx.datetime/Instant // dev.kord.common.entity/DiscordAddedGuildMember.component4|component4(){}[0]
+    final fun component4(): kotlinx.datetime/Instant? // dev.kord.common.entity/DiscordAddedGuildMember.component4|component4(){}[0]
     final fun component5(): dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> // dev.kord.common.entity/DiscordAddedGuildMember.component5|component5(){}[0]
     final fun component6(): kotlin/Boolean // dev.kord.common.entity/DiscordAddedGuildMember.component6|component6(){}[0]
     final fun component7(): kotlin/Boolean // dev.kord.common.entity/DiscordAddedGuildMember.component7|component7(){}[0]
     final fun component8(): dev.kord.common.entity/GuildMemberFlags // dev.kord.common.entity/DiscordAddedGuildMember.component8|component8(){}[0]
     final fun component9(): dev.kord.common.entity/Snowflake // dev.kord.common.entity/DiscordAddedGuildMember.component9|component9(){}[0]
-    final fun copy(dev.kord.common.entity.optional/Optional<dev.kord.common.entity/DiscordUser> = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., kotlin.collections/List<dev.kord.common.entity/Snowflake> = ..., kotlinx.datetime/Instant = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ..., kotlin/Boolean = ..., kotlin/Boolean = ..., dev.kord.common.entity/GuildMemberFlags = ..., dev.kord.common.entity/Snowflake = ..., dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ...): dev.kord.common.entity/DiscordAddedGuildMember // dev.kord.common.entity/DiscordAddedGuildMember.copy|copy(dev.kord.common.entity.optional.Optional<dev.kord.common.entity.DiscordUser>;dev.kord.common.entity.optional.Optional<kotlin.String?>;kotlin.collections.List<dev.kord.common.entity.Snowflake>;kotlinx.datetime.Instant;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>;kotlin.Boolean;kotlin.Boolean;dev.kord.common.entity.GuildMemberFlags;dev.kord.common.entity.Snowflake;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.optional.Optional<kotlin.String?>;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>){}[0]
+    final fun copy(dev.kord.common.entity.optional/Optional<dev.kord.common.entity/DiscordUser> = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., kotlin.collections/List<dev.kord.common.entity/Snowflake> = ..., kotlinx.datetime/Instant? = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ..., kotlin/Boolean = ..., kotlin/Boolean = ..., dev.kord.common.entity/GuildMemberFlags = ..., dev.kord.common.entity/Snowflake = ..., dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ...): dev.kord.common.entity/DiscordAddedGuildMember // dev.kord.common.entity/DiscordAddedGuildMember.copy|copy(dev.kord.common.entity.optional.Optional<dev.kord.common.entity.DiscordUser>;dev.kord.common.entity.optional.Optional<kotlin.String?>;kotlin.collections.List<dev.kord.common.entity.Snowflake>;kotlinx.datetime.Instant?;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>;kotlin.Boolean;kotlin.Boolean;dev.kord.common.entity.GuildMemberFlags;dev.kord.common.entity.Snowflake;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.optional.Optional<kotlin.String?>;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>){}[0]
     final fun equals(kotlin/Any?): kotlin/Boolean // dev.kord.common.entity/DiscordAddedGuildMember.equals|equals(kotlin.Any?){}[0]
     final fun hashCode(): kotlin/Int // dev.kord.common.entity/DiscordAddedGuildMember.hashCode|hashCode(){}[0]
     final fun toString(): kotlin/String // dev.kord.common.entity/DiscordAddedGuildMember.toString|toString(){}[0]
@@ -2561,7 +2561,7 @@ final class dev.kord.common.entity/DiscordGuildIntegrations { // dev.kord.common
 }
 
 final class dev.kord.common.entity/DiscordGuildMember { // dev.kord.common.entity/DiscordGuildMember|null[0]
-    constructor <init>(dev.kord.common.entity.optional/Optional<dev.kord.common.entity/DiscordUser> = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., kotlin.collections/List<dev.kord.common.entity/Snowflake>, kotlinx.datetime/Instant, dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ..., dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity/GuildMemberFlags, dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ...) // dev.kord.common.entity/DiscordGuildMember.<init>|<init>(dev.kord.common.entity.optional.Optional<dev.kord.common.entity.DiscordUser>;dev.kord.common.entity.optional.Optional<kotlin.String?>;kotlin.collections.List<dev.kord.common.entity.Snowflake>;kotlinx.datetime.Instant;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.GuildMemberFlags;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.optional.Optional<kotlin.String?>;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>){}[0]
+    constructor <init>(dev.kord.common.entity.optional/Optional<dev.kord.common.entity/DiscordUser> = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., kotlin.collections/List<dev.kord.common.entity/Snowflake>, kotlinx.datetime/Instant?, dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ..., dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity/GuildMemberFlags, dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ...) // dev.kord.common.entity/DiscordGuildMember.<init>|<init>(dev.kord.common.entity.optional.Optional<dev.kord.common.entity.DiscordUser>;dev.kord.common.entity.optional.Optional<kotlin.String?>;kotlin.collections.List<dev.kord.common.entity.Snowflake>;kotlinx.datetime.Instant?;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.GuildMemberFlags;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.optional.Optional<kotlin.String?>;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>){}[0]
 
     final val avatar // dev.kord.common.entity/DiscordGuildMember.avatar|{}avatar[0]
         final fun <get-avatar>(): dev.kord.common.entity.optional/Optional<kotlin/String?> // dev.kord.common.entity/DiscordGuildMember.avatar.<get-avatar>|<get-avatar>(){}[0]
@@ -2572,7 +2572,7 @@ final class dev.kord.common.entity/DiscordGuildMember { // dev.kord.common.entit
     final val flags // dev.kord.common.entity/DiscordGuildMember.flags|{}flags[0]
         final fun <get-flags>(): dev.kord.common.entity/GuildMemberFlags // dev.kord.common.entity/DiscordGuildMember.flags.<get-flags>|<get-flags>(){}[0]
     final val joinedAt // dev.kord.common.entity/DiscordGuildMember.joinedAt|{}joinedAt[0]
-        final fun <get-joinedAt>(): kotlinx.datetime/Instant // dev.kord.common.entity/DiscordGuildMember.joinedAt.<get-joinedAt>|<get-joinedAt>(){}[0]
+        final fun <get-joinedAt>(): kotlinx.datetime/Instant? // dev.kord.common.entity/DiscordGuildMember.joinedAt.<get-joinedAt>|<get-joinedAt>(){}[0]
     final val mute // dev.kord.common.entity/DiscordGuildMember.mute|{}mute[0]
         final fun <get-mute>(): dev.kord.common.entity.optional/OptionalBoolean // dev.kord.common.entity/DiscordGuildMember.mute.<get-mute>|<get-mute>(){}[0]
     final val nick // dev.kord.common.entity/DiscordGuildMember.nick|{}nick[0]
@@ -2591,13 +2591,13 @@ final class dev.kord.common.entity/DiscordGuildMember { // dev.kord.common.entit
     final fun component11(): dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> // dev.kord.common.entity/DiscordGuildMember.component11|component11(){}[0]
     final fun component2(): dev.kord.common.entity.optional/Optional<kotlin/String?> // dev.kord.common.entity/DiscordGuildMember.component2|component2(){}[0]
     final fun component3(): kotlin.collections/List<dev.kord.common.entity/Snowflake> // dev.kord.common.entity/DiscordGuildMember.component3|component3(){}[0]
-    final fun component4(): kotlinx.datetime/Instant // dev.kord.common.entity/DiscordGuildMember.component4|component4(){}[0]
+    final fun component4(): kotlinx.datetime/Instant? // dev.kord.common.entity/DiscordGuildMember.component4|component4(){}[0]
     final fun component5(): dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> // dev.kord.common.entity/DiscordGuildMember.component5|component5(){}[0]
     final fun component6(): dev.kord.common.entity.optional/OptionalBoolean // dev.kord.common.entity/DiscordGuildMember.component6|component6(){}[0]
     final fun component7(): dev.kord.common.entity.optional/OptionalBoolean // dev.kord.common.entity/DiscordGuildMember.component7|component7(){}[0]
     final fun component8(): dev.kord.common.entity/GuildMemberFlags // dev.kord.common.entity/DiscordGuildMember.component8|component8(){}[0]
     final fun component9(): dev.kord.common.entity.optional/OptionalBoolean // dev.kord.common.entity/DiscordGuildMember.component9|component9(){}[0]
-    final fun copy(dev.kord.common.entity.optional/Optional<dev.kord.common.entity/DiscordUser> = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., kotlin.collections/List<dev.kord.common.entity/Snowflake> = ..., kotlinx.datetime/Instant = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ..., dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity/GuildMemberFlags = ..., dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ...): dev.kord.common.entity/DiscordGuildMember // dev.kord.common.entity/DiscordGuildMember.copy|copy(dev.kord.common.entity.optional.Optional<dev.kord.common.entity.DiscordUser>;dev.kord.common.entity.optional.Optional<kotlin.String?>;kotlin.collections.List<dev.kord.common.entity.Snowflake>;kotlinx.datetime.Instant;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.GuildMemberFlags;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.optional.Optional<kotlin.String?>;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>){}[0]
+    final fun copy(dev.kord.common.entity.optional/Optional<dev.kord.common.entity/DiscordUser> = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., kotlin.collections/List<dev.kord.common.entity/Snowflake> = ..., kotlinx.datetime/Instant? = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ..., dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity/GuildMemberFlags = ..., dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ...): dev.kord.common.entity/DiscordGuildMember // dev.kord.common.entity/DiscordGuildMember.copy|copy(dev.kord.common.entity.optional.Optional<dev.kord.common.entity.DiscordUser>;dev.kord.common.entity.optional.Optional<kotlin.String?>;kotlin.collections.List<dev.kord.common.entity.Snowflake>;kotlinx.datetime.Instant?;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.GuildMemberFlags;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.optional.Optional<kotlin.String?>;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>){}[0]
     final fun equals(kotlin/Any?): kotlin/Boolean // dev.kord.common.entity/DiscordGuildMember.equals|equals(kotlin.Any?){}[0]
     final fun hashCode(): kotlin/Int // dev.kord.common.entity/DiscordGuildMember.hashCode|hashCode(){}[0]
     final fun toString(): kotlin/String // dev.kord.common.entity/DiscordGuildMember.toString|toString(){}[0]
@@ -3081,7 +3081,7 @@ final class dev.kord.common.entity/DiscordInteraction { // dev.kord.common.entit
 }
 
 final class dev.kord.common.entity/DiscordInteractionGuildMember { // dev.kord.common.entity/DiscordInteractionGuildMember|null[0]
-    constructor <init>(dev.kord.common.entity.optional/Optional<dev.kord.common.entity/DiscordUser> = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., kotlin.collections/List<dev.kord.common.entity/Snowflake>, kotlinx.datetime/Instant, dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ..., dev.kord.common.entity/Permissions, dev.kord.common.entity/GuildMemberFlags, dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ...) // dev.kord.common.entity/DiscordInteractionGuildMember.<init>|<init>(dev.kord.common.entity.optional.Optional<dev.kord.common.entity.DiscordUser>;dev.kord.common.entity.optional.Optional<kotlin.String?>;kotlin.collections.List<dev.kord.common.entity.Snowflake>;kotlinx.datetime.Instant;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>;dev.kord.common.entity.Permissions;dev.kord.common.entity.GuildMemberFlags;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.optional.Optional<kotlin.String?>;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>){}[0]
+    constructor <init>(dev.kord.common.entity.optional/Optional<dev.kord.common.entity/DiscordUser> = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., kotlin.collections/List<dev.kord.common.entity/Snowflake>, kotlinx.datetime/Instant?, dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ..., dev.kord.common.entity/Permissions, dev.kord.common.entity/GuildMemberFlags, dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ...) // dev.kord.common.entity/DiscordInteractionGuildMember.<init>|<init>(dev.kord.common.entity.optional.Optional<dev.kord.common.entity.DiscordUser>;dev.kord.common.entity.optional.Optional<kotlin.String?>;kotlin.collections.List<dev.kord.common.entity.Snowflake>;kotlinx.datetime.Instant?;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>;dev.kord.common.entity.Permissions;dev.kord.common.entity.GuildMemberFlags;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.optional.Optional<kotlin.String?>;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>){}[0]
 
     final val avatar // dev.kord.common.entity/DiscordInteractionGuildMember.avatar|{}avatar[0]
         final fun <get-avatar>(): dev.kord.common.entity.optional/Optional<kotlin/String?> // dev.kord.common.entity/DiscordInteractionGuildMember.avatar.<get-avatar>|<get-avatar>(){}[0]
@@ -3090,7 +3090,7 @@ final class dev.kord.common.entity/DiscordInteractionGuildMember { // dev.kord.c
     final val flags // dev.kord.common.entity/DiscordInteractionGuildMember.flags|{}flags[0]
         final fun <get-flags>(): dev.kord.common.entity/GuildMemberFlags // dev.kord.common.entity/DiscordInteractionGuildMember.flags.<get-flags>|<get-flags>(){}[0]
     final val joinedAt // dev.kord.common.entity/DiscordInteractionGuildMember.joinedAt|{}joinedAt[0]
-        final fun <get-joinedAt>(): kotlinx.datetime/Instant // dev.kord.common.entity/DiscordInteractionGuildMember.joinedAt.<get-joinedAt>|<get-joinedAt>(){}[0]
+        final fun <get-joinedAt>(): kotlinx.datetime/Instant? // dev.kord.common.entity/DiscordInteractionGuildMember.joinedAt.<get-joinedAt>|<get-joinedAt>(){}[0]
     final val nick // dev.kord.common.entity/DiscordInteractionGuildMember.nick|{}nick[0]
         final fun <get-nick>(): dev.kord.common.entity.optional/Optional<kotlin/String?> // dev.kord.common.entity/DiscordInteractionGuildMember.nick.<get-nick>|<get-nick>(){}[0]
     final val pending // dev.kord.common.entity/DiscordInteractionGuildMember.pending|{}pending[0]
@@ -3108,13 +3108,13 @@ final class dev.kord.common.entity/DiscordInteractionGuildMember { // dev.kord.c
     final fun component10(): dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> // dev.kord.common.entity/DiscordInteractionGuildMember.component10|component10(){}[0]
     final fun component2(): dev.kord.common.entity.optional/Optional<kotlin/String?> // dev.kord.common.entity/DiscordInteractionGuildMember.component2|component2(){}[0]
     final fun component3(): kotlin.collections/List<dev.kord.common.entity/Snowflake> // dev.kord.common.entity/DiscordInteractionGuildMember.component3|component3(){}[0]
-    final fun component4(): kotlinx.datetime/Instant // dev.kord.common.entity/DiscordInteractionGuildMember.component4|component4(){}[0]
+    final fun component4(): kotlinx.datetime/Instant? // dev.kord.common.entity/DiscordInteractionGuildMember.component4|component4(){}[0]
     final fun component5(): dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> // dev.kord.common.entity/DiscordInteractionGuildMember.component5|component5(){}[0]
     final fun component6(): dev.kord.common.entity/Permissions // dev.kord.common.entity/DiscordInteractionGuildMember.component6|component6(){}[0]
     final fun component7(): dev.kord.common.entity/GuildMemberFlags // dev.kord.common.entity/DiscordInteractionGuildMember.component7|component7(){}[0]
     final fun component8(): dev.kord.common.entity.optional/OptionalBoolean // dev.kord.common.entity/DiscordInteractionGuildMember.component8|component8(){}[0]
     final fun component9(): dev.kord.common.entity.optional/Optional<kotlin/String?> // dev.kord.common.entity/DiscordInteractionGuildMember.component9|component9(){}[0]
-    final fun copy(dev.kord.common.entity.optional/Optional<dev.kord.common.entity/DiscordUser> = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., kotlin.collections/List<dev.kord.common.entity/Snowflake> = ..., kotlinx.datetime/Instant = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ..., dev.kord.common.entity/Permissions = ..., dev.kord.common.entity/GuildMemberFlags = ..., dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ...): dev.kord.common.entity/DiscordInteractionGuildMember // dev.kord.common.entity/DiscordInteractionGuildMember.copy|copy(dev.kord.common.entity.optional.Optional<dev.kord.common.entity.DiscordUser>;dev.kord.common.entity.optional.Optional<kotlin.String?>;kotlin.collections.List<dev.kord.common.entity.Snowflake>;kotlinx.datetime.Instant;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>;dev.kord.common.entity.Permissions;dev.kord.common.entity.GuildMemberFlags;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.optional.Optional<kotlin.String?>;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>){}[0]
+    final fun copy(dev.kord.common.entity.optional/Optional<dev.kord.common.entity/DiscordUser> = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., kotlin.collections/List<dev.kord.common.entity/Snowflake> = ..., kotlinx.datetime/Instant? = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ..., dev.kord.common.entity/Permissions = ..., dev.kord.common.entity/GuildMemberFlags = ..., dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ...): dev.kord.common.entity/DiscordInteractionGuildMember // dev.kord.common.entity/DiscordInteractionGuildMember.copy|copy(dev.kord.common.entity.optional.Optional<dev.kord.common.entity.DiscordUser>;dev.kord.common.entity.optional.Optional<kotlin.String?>;kotlin.collections.List<dev.kord.common.entity.Snowflake>;kotlinx.datetime.Instant?;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>;dev.kord.common.entity.Permissions;dev.kord.common.entity.GuildMemberFlags;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.optional.Optional<kotlin.String?>;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>){}[0]
     final fun equals(kotlin/Any?): kotlin/Boolean // dev.kord.common.entity/DiscordInteractionGuildMember.equals|equals(kotlin.Any?){}[0]
     final fun hashCode(): kotlin/Int // dev.kord.common.entity/DiscordInteractionGuildMember.hashCode|hashCode(){}[0]
     final fun toString(): kotlin/String // dev.kord.common.entity/DiscordInteractionGuildMember.toString|toString(){}[0]
@@ -5001,7 +5001,7 @@ final class dev.kord.common.entity/DiscordUpdatedEmojis { // dev.kord.common.ent
 }
 
 final class dev.kord.common.entity/DiscordUpdatedGuildMember { // dev.kord.common.entity/DiscordUpdatedGuildMember|null[0]
-    constructor <init>(dev.kord.common.entity/Snowflake, kotlin.collections/List<dev.kord.common.entity/Snowflake>, dev.kord.common.entity/DiscordUser, dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., kotlinx.datetime/Instant, dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ..., dev.kord.common.entity/GuildMemberFlags, dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ...) // dev.kord.common.entity/DiscordUpdatedGuildMember.<init>|<init>(dev.kord.common.entity.Snowflake;kotlin.collections.List<dev.kord.common.entity.Snowflake>;dev.kord.common.entity.DiscordUser;dev.kord.common.entity.optional.Optional<kotlin.String?>;kotlinx.datetime.Instant;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>;dev.kord.common.entity.GuildMemberFlags;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.optional.Optional<kotlin.String?>;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>){}[0]
+    constructor <init>(dev.kord.common.entity/Snowflake, kotlin.collections/List<dev.kord.common.entity/Snowflake>, dev.kord.common.entity/DiscordUser, dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., kotlinx.datetime/Instant?, dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ..., dev.kord.common.entity/GuildMemberFlags, dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ...) // dev.kord.common.entity/DiscordUpdatedGuildMember.<init>|<init>(dev.kord.common.entity.Snowflake;kotlin.collections.List<dev.kord.common.entity.Snowflake>;dev.kord.common.entity.DiscordUser;dev.kord.common.entity.optional.Optional<kotlin.String?>;kotlinx.datetime.Instant?;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>;dev.kord.common.entity.GuildMemberFlags;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.optional.Optional<kotlin.String?>;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>){}[0]
 
     final val avatar // dev.kord.common.entity/DiscordUpdatedGuildMember.avatar|{}avatar[0]
         final fun <get-avatar>(): dev.kord.common.entity.optional/Optional<kotlin/String?> // dev.kord.common.entity/DiscordUpdatedGuildMember.avatar.<get-avatar>|<get-avatar>(){}[0]
@@ -5012,7 +5012,7 @@ final class dev.kord.common.entity/DiscordUpdatedGuildMember { // dev.kord.commo
     final val guildId // dev.kord.common.entity/DiscordUpdatedGuildMember.guildId|{}guildId[0]
         final fun <get-guildId>(): dev.kord.common.entity/Snowflake // dev.kord.common.entity/DiscordUpdatedGuildMember.guildId.<get-guildId>|<get-guildId>(){}[0]
     final val joinedAt // dev.kord.common.entity/DiscordUpdatedGuildMember.joinedAt|{}joinedAt[0]
-        final fun <get-joinedAt>(): kotlinx.datetime/Instant // dev.kord.common.entity/DiscordUpdatedGuildMember.joinedAt.<get-joinedAt>|<get-joinedAt>(){}[0]
+        final fun <get-joinedAt>(): kotlinx.datetime/Instant? // dev.kord.common.entity/DiscordUpdatedGuildMember.joinedAt.<get-joinedAt>|<get-joinedAt>(){}[0]
     final val nick // dev.kord.common.entity/DiscordUpdatedGuildMember.nick|{}nick[0]
         final fun <get-nick>(): dev.kord.common.entity.optional/Optional<kotlin/String?> // dev.kord.common.entity/DiscordUpdatedGuildMember.nick.<get-nick>|<get-nick>(){}[0]
     final val pending // dev.kord.common.entity/DiscordUpdatedGuildMember.pending|{}pending[0]
@@ -5029,12 +5029,12 @@ final class dev.kord.common.entity/DiscordUpdatedGuildMember { // dev.kord.commo
     final fun component2(): kotlin.collections/List<dev.kord.common.entity/Snowflake> // dev.kord.common.entity/DiscordUpdatedGuildMember.component2|component2(){}[0]
     final fun component3(): dev.kord.common.entity/DiscordUser // dev.kord.common.entity/DiscordUpdatedGuildMember.component3|component3(){}[0]
     final fun component4(): dev.kord.common.entity.optional/Optional<kotlin/String?> // dev.kord.common.entity/DiscordUpdatedGuildMember.component4|component4(){}[0]
-    final fun component5(): kotlinx.datetime/Instant // dev.kord.common.entity/DiscordUpdatedGuildMember.component5|component5(){}[0]
+    final fun component5(): kotlinx.datetime/Instant? // dev.kord.common.entity/DiscordUpdatedGuildMember.component5|component5(){}[0]
     final fun component6(): dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> // dev.kord.common.entity/DiscordUpdatedGuildMember.component6|component6(){}[0]
     final fun component7(): dev.kord.common.entity/GuildMemberFlags // dev.kord.common.entity/DiscordUpdatedGuildMember.component7|component7(){}[0]
     final fun component8(): dev.kord.common.entity.optional/OptionalBoolean // dev.kord.common.entity/DiscordUpdatedGuildMember.component8|component8(){}[0]
     final fun component9(): dev.kord.common.entity.optional/Optional<kotlin/String?> // dev.kord.common.entity/DiscordUpdatedGuildMember.component9|component9(){}[0]
-    final fun copy(dev.kord.common.entity/Snowflake = ..., kotlin.collections/List<dev.kord.common.entity/Snowflake> = ..., dev.kord.common.entity/DiscordUser = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., kotlinx.datetime/Instant = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ..., dev.kord.common.entity/GuildMemberFlags = ..., dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ...): dev.kord.common.entity/DiscordUpdatedGuildMember // dev.kord.common.entity/DiscordUpdatedGuildMember.copy|copy(dev.kord.common.entity.Snowflake;kotlin.collections.List<dev.kord.common.entity.Snowflake>;dev.kord.common.entity.DiscordUser;dev.kord.common.entity.optional.Optional<kotlin.String?>;kotlinx.datetime.Instant;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>;dev.kord.common.entity.GuildMemberFlags;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.optional.Optional<kotlin.String?>;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>){}[0]
+    final fun copy(dev.kord.common.entity/Snowflake = ..., kotlin.collections/List<dev.kord.common.entity/Snowflake> = ..., dev.kord.common.entity/DiscordUser = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., kotlinx.datetime/Instant? = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ..., dev.kord.common.entity/GuildMemberFlags = ..., dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ...): dev.kord.common.entity/DiscordUpdatedGuildMember // dev.kord.common.entity/DiscordUpdatedGuildMember.copy|copy(dev.kord.common.entity.Snowflake;kotlin.collections.List<dev.kord.common.entity.Snowflake>;dev.kord.common.entity.DiscordUser;dev.kord.common.entity.optional.Optional<kotlin.String?>;kotlinx.datetime.Instant?;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>;dev.kord.common.entity.GuildMemberFlags;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.optional.Optional<kotlin.String?>;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>){}[0]
     final fun equals(kotlin/Any?): kotlin/Boolean // dev.kord.common.entity/DiscordUpdatedGuildMember.equals|equals(kotlin.Any?){}[0]
     final fun hashCode(): kotlin/Int // dev.kord.common.entity/DiscordUpdatedGuildMember.hashCode|hashCode(){}[0]
     final fun toString(): kotlin/String // dev.kord.common.entity/DiscordUpdatedGuildMember.toString|toString(){}[0]
diff --git a/common/src/commonMain/kotlin/entity/Member.kt b/common/src/commonMain/kotlin/entity/Member.kt
index cbcd9e5ee67..244bc4161c4 100644
--- a/common/src/commonMain/kotlin/entity/Member.kt
+++ b/common/src/commonMain/kotlin/entity/Member.kt
@@ -27,7 +27,7 @@ public data class DiscordGuildMember(
     val nick: Optional<String?> = Optional.Missing(),
     val roles: List<Snowflake>,
     @SerialName("joined_at")
-    val joinedAt: Instant,
+    val joinedAt: Instant?,
     @SerialName("premium_since")
     val premiumSince: Optional<Instant?> = Optional.Missing(),
     val deaf: OptionalBoolean = OptionalBoolean.Missing,
@@ -46,7 +46,7 @@ public data class DiscordInteractionGuildMember(
     val nick: Optional<String?> = Optional.Missing(),
     val roles: List<Snowflake>,
     @SerialName("joined_at")
-    val joinedAt: Instant,
+    val joinedAt: Instant?,
     @SerialName("premium_since")
     val premiumSince: Optional<Instant?> = Optional.Missing(),
     val permissions: Permissions,
@@ -64,7 +64,7 @@ public data class DiscordAddedGuildMember(
     val nick: Optional<String?> = Optional.Missing(),
     val roles: List<Snowflake>,
     @SerialName("joined_at")
-    val joinedAt: Instant,
+    val joinedAt: Instant?,
     @SerialName("premium_since")
     val premiumSince: Optional<Instant?> = Optional.Missing(),
     val deaf: Boolean,
@@ -93,7 +93,7 @@ public data class DiscordUpdatedGuildMember(
     val user: DiscordUser,
     val nick: Optional<String?> = Optional.Missing(),
     @SerialName("joined_at")
-    val joinedAt: Instant,
+    val joinedAt: Instant?,
     @SerialName("premium_since")
     val premiumSince: Optional<Instant?> = Optional.Missing(),
     val flags: GuildMemberFlags,
diff --git a/core/api/core.klib.api b/core/api/core.klib.api
index 2b551c5bb2a..1d39196ab5f 100644
--- a/core/api/core.klib.api
+++ b/core/api/core.klib.api
@@ -3895,7 +3895,7 @@ final class dev.kord.core.cache.data/InviteWithMetadataData : dev.kord.core.cach
 }
 
 final class dev.kord.core.cache.data/MemberData { // dev.kord.core.cache.data/MemberData|null[0]
-    constructor <init>(dev.kord.common.entity/Snowflake, dev.kord.common.entity/Snowflake, dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., kotlin.collections/List<dev.kord.common.entity/Snowflake>, kotlinx.datetime/Instant, dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ..., dev.kord.common.entity/GuildMemberFlags, dev.kord.common.entity.optional/Optional<dev.kord.common.entity/Permissions> = ..., dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ...) // dev.kord.core.cache.data/MemberData.<init>|<init>(dev.kord.common.entity.Snowflake;dev.kord.common.entity.Snowflake;dev.kord.common.entity.optional.Optional<kotlin.String?>;kotlin.collections.List<dev.kord.common.entity.Snowflake>;kotlinx.datetime.Instant;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>;dev.kord.common.entity.GuildMemberFlags;dev.kord.common.entity.optional.Optional<dev.kord.common.entity.Permissions>;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.optional.Optional<kotlin.String?>;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>){}[0]
+    constructor <init>(dev.kord.common.entity/Snowflake, dev.kord.common.entity/Snowflake, dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., kotlin.collections/List<dev.kord.common.entity/Snowflake>, kotlinx.datetime/Instant?, dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ..., dev.kord.common.entity/GuildMemberFlags, dev.kord.common.entity.optional/Optional<dev.kord.common.entity/Permissions> = ..., dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ...) // dev.kord.core.cache.data/MemberData.<init>|<init>(dev.kord.common.entity.Snowflake;dev.kord.common.entity.Snowflake;dev.kord.common.entity.optional.Optional<kotlin.String?>;kotlin.collections.List<dev.kord.common.entity.Snowflake>;kotlinx.datetime.Instant?;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>;dev.kord.common.entity.GuildMemberFlags;dev.kord.common.entity.optional.Optional<dev.kord.common.entity.Permissions>;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.optional.Optional<kotlin.String?>;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>){}[0]
 
     final val avatar // dev.kord.core.cache.data/MemberData.avatar|{}avatar[0]
         final fun <get-avatar>(): dev.kord.common.entity.optional/Optional<kotlin/String?> // dev.kord.core.cache.data/MemberData.avatar.<get-avatar>|<get-avatar>(){}[0]
@@ -3906,7 +3906,7 @@ final class dev.kord.core.cache.data/MemberData { // dev.kord.core.cache.data/Me
     final val guildId // dev.kord.core.cache.data/MemberData.guildId|{}guildId[0]
         final fun <get-guildId>(): dev.kord.common.entity/Snowflake // dev.kord.core.cache.data/MemberData.guildId.<get-guildId>|<get-guildId>(){}[0]
     final val joinedAt // dev.kord.core.cache.data/MemberData.joinedAt|{}joinedAt[0]
-        final fun <get-joinedAt>(): kotlinx.datetime/Instant // dev.kord.core.cache.data/MemberData.joinedAt.<get-joinedAt>|<get-joinedAt>(){}[0]
+        final fun <get-joinedAt>(): kotlinx.datetime/Instant? // dev.kord.core.cache.data/MemberData.joinedAt.<get-joinedAt>|<get-joinedAt>(){}[0]
     final val nick // dev.kord.core.cache.data/MemberData.nick|{}nick[0]
         final fun <get-nick>(): dev.kord.common.entity.optional/Optional<kotlin/String?> // dev.kord.core.cache.data/MemberData.nick.<get-nick>|<get-nick>(){}[0]
     final val pending // dev.kord.core.cache.data/MemberData.pending|{}pending[0]
@@ -3926,12 +3926,12 @@ final class dev.kord.core.cache.data/MemberData { // dev.kord.core.cache.data/Me
     final fun component2(): dev.kord.common.entity/Snowflake // dev.kord.core.cache.data/MemberData.component2|component2(){}[0]
     final fun component3(): dev.kord.common.entity.optional/Optional<kotlin/String?> // dev.kord.core.cache.data/MemberData.component3|component3(){}[0]
     final fun component4(): kotlin.collections/List<dev.kord.common.entity/Snowflake> // dev.kord.core.cache.data/MemberData.component4|component4(){}[0]
-    final fun component5(): kotlinx.datetime/Instant // dev.kord.core.cache.data/MemberData.component5|component5(){}[0]
+    final fun component5(): kotlinx.datetime/Instant? // dev.kord.core.cache.data/MemberData.component5|component5(){}[0]
     final fun component6(): dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> // dev.kord.core.cache.data/MemberData.component6|component6(){}[0]
     final fun component7(): dev.kord.common.entity/GuildMemberFlags // dev.kord.core.cache.data/MemberData.component7|component7(){}[0]
     final fun component8(): dev.kord.common.entity.optional/Optional<dev.kord.common.entity/Permissions> // dev.kord.core.cache.data/MemberData.component8|component8(){}[0]
     final fun component9(): dev.kord.common.entity.optional/OptionalBoolean // dev.kord.core.cache.data/MemberData.component9|component9(){}[0]
-    final fun copy(dev.kord.common.entity/Snowflake = ..., dev.kord.common.entity/Snowflake = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., kotlin.collections/List<dev.kord.common.entity/Snowflake> = ..., kotlinx.datetime/Instant = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ..., dev.kord.common.entity/GuildMemberFlags = ..., dev.kord.common.entity.optional/Optional<dev.kord.common.entity/Permissions> = ..., dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ...): dev.kord.core.cache.data/MemberData // dev.kord.core.cache.data/MemberData.copy|copy(dev.kord.common.entity.Snowflake;dev.kord.common.entity.Snowflake;dev.kord.common.entity.optional.Optional<kotlin.String?>;kotlin.collections.List<dev.kord.common.entity.Snowflake>;kotlinx.datetime.Instant;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>;dev.kord.common.entity.GuildMemberFlags;dev.kord.common.entity.optional.Optional<dev.kord.common.entity.Permissions>;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.optional.Optional<kotlin.String?>;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>){}[0]
+    final fun copy(dev.kord.common.entity/Snowflake = ..., dev.kord.common.entity/Snowflake = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., kotlin.collections/List<dev.kord.common.entity/Snowflake> = ..., kotlinx.datetime/Instant? = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ..., dev.kord.common.entity/GuildMemberFlags = ..., dev.kord.common.entity.optional/Optional<dev.kord.common.entity/Permissions> = ..., dev.kord.common.entity.optional/OptionalBoolean = ..., dev.kord.common.entity.optional/Optional<kotlin/String?> = ..., dev.kord.common.entity.optional/Optional<kotlinx.datetime/Instant?> = ...): dev.kord.core.cache.data/MemberData // dev.kord.core.cache.data/MemberData.copy|copy(dev.kord.common.entity.Snowflake;dev.kord.common.entity.Snowflake;dev.kord.common.entity.optional.Optional<kotlin.String?>;kotlin.collections.List<dev.kord.common.entity.Snowflake>;kotlinx.datetime.Instant?;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>;dev.kord.common.entity.GuildMemberFlags;dev.kord.common.entity.optional.Optional<dev.kord.common.entity.Permissions>;dev.kord.common.entity.optional.OptionalBoolean;dev.kord.common.entity.optional.Optional<kotlin.String?>;dev.kord.common.entity.optional.Optional<kotlinx.datetime.Instant?>){}[0]
     final fun equals(kotlin/Any?): kotlin/Boolean // dev.kord.core.cache.data/MemberData.equals|equals(kotlin.Any?){}[0]
     final fun hashCode(): kotlin/Int // dev.kord.core.cache.data/MemberData.hashCode|hashCode(){}[0]
     final fun toString(): kotlin/String // dev.kord.core.cache.data/MemberData.toString|toString(){}[0]
@@ -7825,7 +7825,7 @@ final class dev.kord.core.entity/Member : dev.kord.core.behavior/MemberBehavior,
     final val isPending // dev.kord.core.entity/Member.isPending|{}isPending[0]
         final fun <get-isPending>(): kotlin/Boolean // dev.kord.core.entity/Member.isPending.<get-isPending>|<get-isPending>(){}[0]
     final val joinedAt // dev.kord.core.entity/Member.joinedAt|{}joinedAt[0]
-        final fun <get-joinedAt>(): kotlinx.datetime/Instant // dev.kord.core.entity/Member.joinedAt.<get-joinedAt>|<get-joinedAt>(){}[0]
+        final fun <get-joinedAt>(): kotlinx.datetime/Instant? // dev.kord.core.entity/Member.joinedAt.<get-joinedAt>|<get-joinedAt>(){}[0]
     final val memberAvatar // dev.kord.core.entity/Member.memberAvatar|{}memberAvatar[0]
         final fun <get-memberAvatar>(): dev.kord.core.entity/Asset? // dev.kord.core.entity/Member.memberAvatar.<get-memberAvatar>|<get-memberAvatar>(){}[0]
     final val memberAvatarHash // dev.kord.core.entity/Member.memberAvatarHash|{}memberAvatarHash[0]
diff --git a/core/src/commonMain/kotlin/cache/data/MemberData.kt b/core/src/commonMain/kotlin/cache/data/MemberData.kt
index 286a3bcc68d..2883b5ddb8b 100644
--- a/core/src/commonMain/kotlin/cache/data/MemberData.kt
+++ b/core/src/commonMain/kotlin/cache/data/MemberData.kt
@@ -16,7 +16,7 @@ public data class MemberData(
     val guildId: Snowflake,
     val nick: Optional<String?> = Optional.Missing(),
     val roles: List<Snowflake>,
-    val joinedAt: Instant,
+    val joinedAt: Instant?,
     val premiumSince: Optional<Instant?> = Optional.Missing(),
     val flags: GuildMemberFlags,
     val permissions: Optional<Permissions> = Optional.Missing(),
diff --git a/core/src/commonMain/kotlin/entity/Member.kt b/core/src/commonMain/kotlin/entity/Member.kt
index 6be08925ca8..a37683931c2 100644
--- a/core/src/commonMain/kotlin/entity/Member.kt
+++ b/core/src/commonMain/kotlin/entity/Member.kt
@@ -44,7 +44,7 @@ public class Member(
     /**
      * When the user joined this [guild].
      */
-    public val joinedAt: Instant get() = memberData.joinedAt
+    public val joinedAt: Instant? get() = memberData.joinedAt
 
     /**
      * The guild-specific nickname of the user, if present.