diff --git a/dist/codegen-ts-runtime.js b/dist/codegen-ts-runtime.js
index 5a0c0eb..d5857bf 100755
--- a/dist/codegen-ts-runtime.js
+++ b/dist/codegen-ts-runtime.js
@@ -280,7 +280,10 @@ const renderRuntime = (schema, root) => {
   serveQuixosPackageRuntime,
 } from "@quixos/camino-package-runtime";
 
-${collectProtoDeclarations(root, schema.implements.flatMap((entry) => entry.typeBindings.map((binding) => binding.type)))}
+${collectProtoDeclarations(root, [
+        ...writableFields.map((field) => field.type),
+        ...schema.implements.flatMap((entry) => entry.typeBindings.map((binding) => binding.type)),
+    ])}
 
 ${interfaceRefTypes ? `${interfaceRefTypes}\n\n` : ""}export type ${refTypeName} = ${refType};
 
diff --git a/src/codegen-ts-runtime.ts b/src/codegen-ts-runtime.ts
index bacc582..0d40c8a 100644
--- a/src/codegen-ts-runtime.ts
+++ b/src/codegen-ts-runtime.ts
@@ -386,7 +386,12 @@ const renderRuntime = (schema: ClassSchema, root: protobuf.Root) => {
   serveQuixosPackageRuntime,
 } from "@quixos/camino-package-runtime";
 
-${collectProtoDeclarations(root, schema.implements.flatMap((entry) => entry.typeBindings.map((binding) => binding.type)))}
+${collectProtoDeclarations(root, [
+  ...writableFields.map((field) => field.type),
+  ...schema.implements.flatMap((entry) =>
+    entry.typeBindings.map((binding) => binding.type),
+  ),
+])}
 
 ${interfaceRefTypes ? `${interfaceRefTypes}\n\n` : ""}export type ${refTypeName} = ${refType};