diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 592f26a..de7c917 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        rust: [nightly, beta, stable, 1.37.0]
+        rust: [nightly, beta, stable, 1.42.0]
     steps:
       - uses: actions/checkout@v2
       - uses: dtolnay/rust-toolchain@master
diff --git a/Cargo.toml b/Cargo.toml
index e8e62cc..a5947f3 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,7 +13,8 @@ rustc-serialize = { version = "0.3", optional = true }
 serde = { version = "1.0", features = ["derive"], optional = true }
 serde-bench = { version = "0.0.7", optional = true }
 serde_json = { version = "1.0", optional = true }
-simd-json = { version = "0.1", optional = true}
+simd-json = { version = "0.3", optional = true }
+simd-json-derive = { version = "0.1", optional = true }
 time = "0.1"
 
 [features]
@@ -22,7 +23,7 @@ all-libs = ["lib-serde", "lib-json-rust", "lib-rustc-serialize", "lib-simd-json"
 all-files = ["file-canada", "file-citm-catalog", "file-twitter"]
 performance = ["parse-dom", "stringify-dom", "parse-struct", "stringify-struct"]
 lib-serde = ["serde", "serde_json"]
-lib-simd-json = ["serde", "simd-json"]
+lib-simd-json = ["serde", "simd-json", "simd-json-derive"]
 lib-json-rust = ["json"]
 lib-rustc-serialize = ["rustc-serialize"]
 file-canada = []
diff --git a/src/canada.rs b/src/canada.rs
index 70d84f3..4375c07 100644
--- a/src/canada.rs
+++ b/src/canada.rs
@@ -7,6 +7,7 @@ pub type Canada = FeatureCollection;
 
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "serde", serde(deny_unknown_fields))]
+#[cfg_attr(feature = "lib-simd-json", derive(simd_json_derive::Serialize))]
 pub struct FeatureCollection {
     #[cfg_attr(feature = "serde", serde(rename = "type"))]
     pub obj_type: ObjType,
@@ -15,6 +16,7 @@ pub struct FeatureCollection {
 
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "serde", serde(deny_unknown_fields))]
+#[cfg_attr(feature = "lib-simd-json", derive(simd_json_derive::Serialize))]
 pub struct Feature {
     #[cfg_attr(feature = "serde", serde(rename = "type"))]
     pub obj_type: ObjType,
@@ -24,6 +26,7 @@ pub struct Feature {
 
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "serde", serde(deny_unknown_fields))]
+#[cfg_attr(feature = "lib-simd-json", derive(simd_json_derive::Serialize))]
 pub struct Geometry {
     #[cfg_attr(feature = "serde", serde(rename = "type"))]
     pub obj_type: ObjType,
diff --git a/src/color.rs b/src/color.rs
index ffcf22e..14d9a5b 100644
--- a/src/color.rs
+++ b/src/color.rs
@@ -58,6 +58,17 @@ impl Serialize for Color {
     }
 }
 
+#[cfg(feature = "lib-simd-json")]
+impl simd_json_derive::Serialize for Color {
+    fn json_write<W>(&self, writer: &mut W) -> std::io::Result<()>
+    where
+        W: std::io::Write,
+    {
+        let mut buf = MaybeUninit::uninit();
+        self.as_str(&mut buf).json_write(writer)
+    }
+}
+
 #[cfg(feature = "serde")]
 impl<'de> Deserialize<'de> for Color {
     fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
diff --git a/src/copy/citm_catalog.rs b/src/copy/citm_catalog.rs
index 84af11c..a707163 100644
--- a/src/copy/citm_catalog.rs
+++ b/src/copy/citm_catalog.rs
@@ -11,6 +11,7 @@ use crate::prim_str::PrimStr;
     feature = "serde",
     serde(deny_unknown_fields, rename_all = "camelCase")
 )]
+#[cfg_attr(feature = "lib-simd-json", derive(simd_json_derive::Serialize))]
 pub struct CitmCatalog {
     pub area_names: Map<IdStr, String>,
     pub audience_sub_category_names: Map<IdStr, String>,
@@ -33,6 +34,7 @@ pub type IdStr = PrimStr<u32>;
     feature = "serde",
     serde(deny_unknown_fields, rename_all = "camelCase")
 )]
+#[cfg_attr(feature = "lib-simd-json", derive(simd_json_derive::Serialize))]
 pub struct Event {
     pub description: (),
     pub id: Id,
@@ -49,6 +51,7 @@ pub struct Event {
     feature = "serde",
     serde(deny_unknown_fields, rename_all = "camelCase")
 )]
+#[cfg_attr(feature = "lib-simd-json", derive(simd_json_derive::Serialize))]
 pub struct Performance {
     pub event_id: Id,
     pub id: Id,
@@ -66,6 +69,7 @@ pub struct Performance {
     feature = "serde",
     serde(deny_unknown_fields, rename_all = "camelCase")
 )]
+#[cfg_attr(feature = "lib-simd-json", derive(simd_json_derive::Serialize))]
 pub struct Price {
     pub amount: u32,
     pub audience_sub_category_id: Id,
@@ -77,6 +81,7 @@ pub struct Price {
     feature = "serde",
     serde(deny_unknown_fields, rename_all = "camelCase")
 )]
+#[cfg_attr(feature = "lib-simd-json", derive(simd_json_derive::Serialize))]
 pub struct SeatCategory {
     pub areas: Vec<Area>,
     pub seat_category_id: Id,
@@ -87,6 +92,7 @@ pub struct SeatCategory {
     feature = "serde",
     serde(deny_unknown_fields, rename_all = "camelCase")
 )]
+#[cfg_attr(feature = "lib-simd-json", derive(simd_json_derive::Serialize))]
 pub struct Area {
     pub area_id: Id,
     pub block_ids: empty::Array,
diff --git a/src/copy/twitter.rs b/src/copy/twitter.rs
index 7a63c51..7003d1d 100644
--- a/src/copy/twitter.rs
+++ b/src/copy/twitter.rs
@@ -11,6 +11,7 @@ use crate::prim_str::PrimStr;
     feature = "lib-rustc-serialize",
     derive(RustcEncodable, RustcDecodable)
 )]
+#[cfg_attr(feature = "lib-simd-json", derive(simd_json_derive::Serialize))]
 pub struct Twitter {
     pub statuses: Vec<Status>,
     pub search_metadata: SearchMetadata,
@@ -27,6 +28,7 @@ pub type ShortIdStr = PrimStr<ShortId>;
     feature = "lib-rustc-serialize",
     derive(RustcEncodable, RustcDecodable)
 )]
+#[cfg_attr(feature = "lib-simd-json", derive(simd_json_derive::Serialize))]
 pub struct Status {
     pub metadata: Metadata,
     pub created_at: String,
@@ -61,6 +63,7 @@ pub struct Status {
     feature = "lib-rustc-serialize",
     derive(RustcEncodable, RustcDecodable)
 )]
+#[cfg_attr(feature = "lib-simd-json", derive(simd_json_derive::Serialize))]
 pub struct Metadata {
     pub result_type: ResultType,
     pub iso_language_code: LanguageCode,
@@ -72,6 +75,7 @@ pub struct Metadata {
     feature = "lib-rustc-serialize",
     derive(RustcEncodable, RustcDecodable)
 )]
+#[cfg_attr(feature = "lib-simd-json", derive(simd_json_derive::Serialize))]
 pub struct User {
     pub id: ShortId,
     pub id_str: ShortIdStr,
@@ -121,6 +125,7 @@ pub struct User {
     feature = "lib-rustc-serialize",
     derive(RustcEncodable, RustcDecodable)
 )]
+#[cfg_attr(feature = "lib-simd-json", derive(simd_json_derive::Serialize))]
 pub struct UserEntities {
     pub url: Option<UserUrl>,
     pub description: UserEntitiesDescription,
@@ -132,6 +137,7 @@ pub struct UserEntities {
     feature = "lib-rustc-serialize",
     derive(RustcEncodable, RustcDecodable)
 )]
+#[cfg_attr(feature = "lib-simd-json", derive(simd_json_derive::Serialize))]
 pub struct UserUrl {
     pub urls: Vec<Url>,
 }
@@ -142,6 +148,7 @@ pub struct UserUrl {
     feature = "lib-rustc-serialize",
     derive(RustcEncodable, RustcDecodable)
 )]
+#[cfg_attr(feature = "lib-simd-json", derive(simd_json_derive::Serialize))]
 pub struct Url {
     pub url: String,
     pub expanded_url: String,
@@ -155,6 +162,7 @@ pub struct Url {
     feature = "lib-rustc-serialize",
     derive(RustcEncodable, RustcDecodable)
 )]
+#[cfg_attr(feature = "lib-simd-json", derive(simd_json_derive::Serialize))]
 pub struct UserEntitiesDescription {
     pub urls: Vec<Url>,
 }
@@ -165,6 +173,7 @@ pub struct UserEntitiesDescription {
     feature = "lib-rustc-serialize",
     derive(RustcEncodable, RustcDecodable)
 )]
+#[cfg_attr(feature = "lib-simd-json", derive(simd_json_derive::Serialize))]
 pub struct StatusEntities {
     pub hashtags: Vec<Hashtag>,
     pub symbols: empty::Array,
@@ -179,6 +188,7 @@ pub struct StatusEntities {
     feature = "lib-rustc-serialize",
     derive(RustcEncodable, RustcDecodable)
 )]
+#[cfg_attr(feature = "lib-simd-json", derive(simd_json_derive::Serialize))]
 pub struct Hashtag {
     pub text: String,
     pub indices: Indices,
@@ -190,6 +200,7 @@ pub struct Hashtag {
     feature = "lib-rustc-serialize",
     derive(RustcEncodable, RustcDecodable)
 )]
+#[cfg_attr(feature = "lib-simd-json", derive(simd_json_derive::Serialize))]
 pub struct UserMention {
     pub screen_name: String,
     pub name: String,
@@ -200,6 +211,7 @@ pub struct UserMention {
 
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "serde", serde(deny_unknown_fields))]
+#[cfg_attr(feature = "lib-simd-json", derive(simd_json_derive::Serialize))]
 pub struct Media {
     pub id: LongId,
     pub id_str: LongIdStr,
@@ -222,6 +234,7 @@ pub struct Media {
     feature = "lib-rustc-serialize",
     derive(RustcEncodable, RustcDecodable)
 )]
+#[cfg_attr(feature = "lib-simd-json", derive(simd_json_derive::Serialize))]
 pub struct Sizes {
     pub medium: Size,
     pub small: Size,
@@ -235,6 +248,7 @@ pub struct Sizes {
     feature = "lib-rustc-serialize",
     derive(RustcEncodable, RustcDecodable)
 )]
+#[cfg_attr(feature = "lib-simd-json", derive(simd_json_derive::Serialize))]
 pub struct Size {
     pub w: u16,
     pub h: u16,
@@ -249,6 +263,7 @@ pub type Indices = (u8, u8);
     feature = "lib-rustc-serialize",
     derive(RustcEncodable, RustcDecodable)
 )]
+#[cfg_attr(feature = "lib-simd-json", derive(simd_json_derive::Serialize))]
 pub struct SearchMetadata {
     pub completed_in: f32,
     pub max_id: LongId,
diff --git a/src/empty.rs b/src/empty.rs
index 59ed200..8df4241 100644
--- a/src/empty.rs
+++ b/src/empty.rs
@@ -45,6 +45,16 @@ impl<'de> Deserialize<'de> for Array {
     }
 }
 
+#[cfg(feature = "lib-simd-json")]
+impl simd_json_derive::Serialize for Array {
+    fn json_write<W>(&self, writer: &mut W) -> std::io::Result<()>
+    where
+        W: std::io::Write,
+    {
+        writer.write_all(b"[]")
+    }
+}
+
 #[cfg(feature = "lib-rustc-serialize")]
 impl Encodable for Array {
     fn encode<S>(&self, s: &mut S) -> Result<(), S::Error>
diff --git a/src/enums.rs b/src/enums.rs
index 856b738..cc47bea 100644
--- a/src/enums.rs
+++ b/src/enums.rs
@@ -6,7 +6,7 @@ macro_rules! enum_str {
             $($variant,)*
         }
 
-        #[cfg(any(feature = "serde", feature = "lib-rustc-serialize"))]
+        #[cfg(any(feature = "lib-simd-json", feature = "lib-serde", feature = "lib-rustc-serialize"))]
         impl $name {
             fn as_str(self) -> &'static str {
                 match self {
@@ -52,6 +52,15 @@ macro_rules! enum_str {
             }
         }
 
+        #[cfg(feature = "lib-simd-json")]
+        impl ::simd_json_derive::Serialize for $name {
+            fn json_write<W>(&self, writer: &mut W) -> std::io::Result<()>
+                where W: std::io::Write
+            {
+                self.as_str().json_write(writer)
+            }
+        }
+
         #[cfg(feature = "lib-rustc-serialize")]
         impl ::rustc_serialize::Encodable for $name {
             fn encode<S>(&self, s: &mut S) -> Result<(), S::Error>
diff --git a/src/main.rs b/src/main.rs
index fb88596..a6d2f85 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -129,6 +129,7 @@ macro_rules! bench_file_simd_json {
         path: $path:expr,
         structure: $structure:ty,
     } => {
+
         let num_trials = num_trials().unwrap_or(256);
 
         print!("{:22}", $path);
@@ -160,6 +161,7 @@ macro_rules! bench_file_simd_json {
 
         #[cfg(feature = "stringify-dom")]
         {
+            use simd_json::prelude::*;
             let len = contents.len();
             let mut data = contents.clone();
             let dom = simd_json_parse_dom(&mut data).unwrap();
@@ -190,6 +192,22 @@ macro_rules! bench_file_simd_json {
             io::stdout().flush().unwrap();
         }
 
+        #[cfg(feature = "stringify-struct")]
+        {
+            use simd_json_derive::Serialize;
+            let len = contents.len();
+            let mut data = contents.clone();
+            let parsed: $structure = simd_json_parse_struct(&mut data).unwrap();
+            let dur = timer::bench_with_buf(num_trials, len, |out| {
+                parsed.json_write(out).unwrap();
+            });
+            let mut serialized = Vec::new();
+            parsed.json_write(&mut serialized).unwrap();
+
+            print!("{:6} MB/s", throughput(dur, serialized.len()));
+            io::stdout().flush().unwrap();
+        }
+
         println!();
     }
 }
diff --git a/src/prim_str.rs b/src/prim_str.rs
index 6d34daf..d0c6ea2 100644
--- a/src/prim_str.rs
+++ b/src/prim_str.rs
@@ -65,6 +65,19 @@ where
     }
 }
 
+#[cfg(feature = "lib-simd-json")]
+impl<T> simd_json_derive::Serialize for PrimStr<T>
+where
+    T: Copy + Ord + Display + FromStr,
+{
+    fn json_write<W>(&self, writer: &mut W) -> std::io::Result<()>
+    where
+        W: std::io::Write,
+    {
+        write!(writer, "{}", self.0)
+    }
+}
+
 #[cfg(feature = "lib-rustc-serialize")]
 impl<T> Encodable for PrimStr<T>
 where