diff --git a/.github/workflows/build-test.yml b/.github/workflows/build-test.yml
index a45fa5ef..e04ccf93 100644
--- a/.github/workflows/build-test.yml
+++ b/.github/workflows/build-test.yml
@@ -41,9 +41,6 @@ jobs:
           key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
           restore-keys: |
             ${{ runner.os }}-pnpm-store-
-
-      - name: Install Python dependencies
-        run: sudo apt-get install python3-distutils
         
       - name: Install dependencies and build
         run: pnpm install --frozen-lockfile
diff --git a/packages/devtools/src/schema/parser.ts b/packages/devtools/src/schema/parser.ts
index 48e6222a..7651c6de 100644
--- a/packages/devtools/src/schema/parser.ts
+++ b/packages/devtools/src/schema/parser.ts
@@ -288,10 +288,7 @@ export class SchemaParser {
         immutableFields: Array.from(
           new Set(
             Object.keys(object.properties)
-              .filter((key) => {
-                const property = object.properties[key];
-                return property.immutable === true || ('item' in property && property.item && property.item.immutable)
-              })
+              .filter((key) => object.properties[key].immutable === true)
               .concat(inheritedImmutableFields),
           ),
         ),
@@ -328,7 +325,7 @@ export class SchemaParser {
 
     for (const [key, value] of Object.entries(objectFields)) {
       const directives = getDirectives(this.#schema, value)
-
+      const immutable = directives.some((item) => item.name === 'immutable')
       const [innerType, required] = isNonNullType(value.type)
         ? [value.type.ofType, true]
         : [value.type, false]
@@ -347,6 +344,7 @@ export class SchemaParser {
           key,
           innerType,
           required,
+          immutable,
           directives,
           hasCreateModel,
         )
@@ -520,6 +518,7 @@ export class SchemaParser {
     fieldName: string,
     type: GraphQLList<GraphQLType>,
     required: boolean,
+    immutable: boolean,
     directives: Array<DirectiveAnnotation>,
     hasCreateModel: boolean,
   ): DefinitionWithReferences<ListFieldDefinition> {
@@ -537,6 +536,7 @@ export class SchemaParser {
     const definition: ListFieldDefinition = {
       type: 'list',
       required,
+      immutable,
       item: item.definition,
       maxLength: list.args.maxLength as number,
     }
diff --git a/packages/runtime/test/__snapshots__/runtime.test.ts.snap b/packages/runtime/test/__snapshots__/runtime.test.ts.snap
index 2ed3af16..e492f65b 100644
--- a/packages/runtime/test/__snapshots__/runtime.test.ts.snap
+++ b/packages/runtime/test/__snapshots__/runtime.test.ts.snap
@@ -291,7 +291,6 @@ type Favorite implements Node {
   tag: String!
   note: String
   docID: CeramicStreamID!
-  extra: String
   doc: Node
 }
 
@@ -454,7 +453,6 @@ input FavoriteInput {
   tag: String!
   note: String
   docID: CeramicStreamID!
-  extra: String
 }
 
 input SetOptionsInput {
@@ -1810,7 +1808,6 @@ scalar CeramicCommitID @specifiedBy(url: "https://cips.ceramic.network/CIPs/cip-
 input PartialPostInput {
   date: DateTime
   text: String
-  testList: [String]
 }
 
 type EnableIndexingPostPayload {