diff --git a/adl/stdlib/sys/types.adl-rs b/adl/stdlib/sys/types.adl-rs
index a0cf784e..a76e0cf4 100644
--- a/adl/stdlib/sys/types.adl-rs
+++ b/adl/stdlib/sys/types.adl-rs
@@ -5,36 +5,36 @@ import adlc.config.rust.*;
 annotation Maybe RustCustomType {
   "rustname" : "{{STDLIBMODULE}}::custom::sys::types::maybe::Maybe",
   "helpers" : "{{STDLIBMODULE}}::custom::sys::types::maybe::Maybe",
-  "stdTraits": ["Eq", "PartialEq", "Hash", "Serialize", "Deserialize"]
+  "stdTraits": ["Eq", "PartialEq", "Hash", "Serialize", "Deserialize", "Clone"]
   };
 
 annotation MapEntry RustCustomType {
   "rustname" : "{{STDLIBMODULE}}::custom::sys::types::mapentry::MapEntry",
   "helpers" : "{{STDLIBMODULE}}::custom::sys::types::mapentry::MapEntry",
-  "stdTraits": ["Eq", "PartialEq", "Hash", "Serialize", "Deserialize"]
+  "stdTraits": ["Eq", "PartialEq", "Hash", "Serialize", "Deserialize", "Clone"]
   };
 
 annotation Map RustCustomType {
   "rustname" : "{{STDLIBMODULE}}::custom::sys::types::map::Map",
   "helpers" : "{{STDLIBMODULE}}::custom::sys::types::map::Map",
-  "stdTraits": ["Eq", "PartialEq", "Serialize", "Deserialize"]
+  "stdTraits": ["Eq", "PartialEq", "Serialize", "Deserialize", "Clone"]
   };
 
 annotation Set RustCustomType {
   "rustname" : "{{STDLIBMODULE}}::custom::sys::types::set::Set",
   "helpers" : "{{STDLIBMODULE}}::custom::sys::types::set::Set",
-  "stdTraits": ["Eq", "PartialEq", "Serialize", "Deserialize"]
+  "stdTraits": ["Eq", "PartialEq", "Serialize", "Deserialize", "Clone"]
   };
 
 annotation Pair RustCustomType {
   "rustname" : "{{STDLIBMODULE}}::custom::sys::types::pair::Pair",
   "helpers" : "{{STDLIBMODULE}}::custom::sys::types::pair::Pair",
-  "stdTraits": ["Eq", "PartialEq", "Hash", "Serialize", "Deserialize"]
+  "stdTraits": ["Eq", "PartialEq", "Hash", "Serialize", "Deserialize", "Clone"]
   };
 
 annotation Result RustCustomType {
   "rustname" : "{{STDLIBMODULE}}::custom::sys::types::result::Result",
   "helpers" : "{{STDLIBMODULE}}::custom::sys::types::result::Result",
-  "stdTraits": ["Eq", "PartialEq", "Hash", "Serialize", "Deserialize"]
+  "stdTraits": ["Eq", "PartialEq", "Hash", "Serialize", "Deserialize", "Clone"]
   };
 };
diff --git a/haskell/compiler/tests/test4/rs-output/test4/adl/test4.rs b/haskell/compiler/tests/test4/rs-output/test4/adl/test4.rs
index f69e768d..1d80f7b5 100644
--- a/haskell/compiler/tests/test4/rs-output/test4/adl/test4.rs
+++ b/haskell/compiler/tests/test4/rs-output/test4/adl/test4.rs
@@ -31,7 +31,7 @@ impl CDate0 {
   }
 }
 
-#[derive(Deserialize,Eq,PartialEq,Serialize)]
+#[derive(Clone,Deserialize,Eq,PartialEq,Serialize)]
 pub struct S {
   #[serde(rename="v1")]
   pub v_1: Date,
diff --git a/haskell/compiler/tests/test6/rs-output/test6/adl/sys/adlast.rs b/haskell/compiler/tests/test6/rs-output/test6/adl/sys/adlast.rs
index a8f7620c..8dfa387a 100644
--- a/haskell/compiler/tests/test6/rs-output/test6/adl/sys/adlast.rs
+++ b/haskell/compiler/tests/test6/rs-output/test6/adl/sys/adlast.rs
@@ -57,7 +57,7 @@ impl TypeExpr {
   }
 }
 
-#[derive(Deserialize,PartialEq,Serialize)]
+#[derive(Clone,Deserialize,PartialEq,Serialize)]
 pub struct Field {
   pub name: Ident,
 
@@ -84,7 +84,7 @@ impl Field {
   }
 }
 
-#[derive(Deserialize,PartialEq,Serialize)]
+#[derive(Clone,Deserialize,PartialEq,Serialize)]
 pub struct Struct {
   #[serde(rename="typeParams")]
   pub type_params: Vec<Ident>,
@@ -101,7 +101,7 @@ impl Struct {
   }
 }
 
-#[derive(Deserialize,PartialEq,Serialize)]
+#[derive(Clone,Deserialize,PartialEq,Serialize)]
 pub struct Union {
   #[serde(rename="typeParams")]
   pub type_params: Vec<Ident>,
@@ -136,7 +136,7 @@ impl TypeDef {
   }
 }
 
-#[derive(Deserialize,PartialEq,Serialize)]
+#[derive(Clone,Deserialize,PartialEq,Serialize)]
 pub struct NewType {
   #[serde(rename="typeParams")]
   pub type_params: Vec<Ident>,
@@ -157,7 +157,7 @@ impl NewType {
   }
 }
 
-#[derive(Deserialize,PartialEq,Serialize)]
+#[derive(Clone,Deserialize,PartialEq,Serialize)]
 pub enum DeclType {
   #[serde(rename="struct_")]
   Struct(Struct),
@@ -172,7 +172,7 @@ pub enum DeclType {
   Newtype(NewType),
 }
 
-#[derive(Deserialize,PartialEq,Serialize)]
+#[derive(Clone,Deserialize,PartialEq,Serialize)]
 pub struct Decl {
   pub name: Ident,
 
@@ -195,7 +195,7 @@ impl Decl {
   }
 }
 
-#[derive(Deserialize,PartialEq,Serialize)]
+#[derive(Clone,Deserialize,PartialEq,Serialize)]
 pub struct ScopedDecl {
   #[serde(rename="moduleName")]
   pub module_name: ModuleName,
@@ -223,7 +223,7 @@ pub enum Import {
   ScopedName(ScopedName),
 }
 
-#[derive(Deserialize,PartialEq,Serialize)]
+#[derive(Clone,Deserialize,PartialEq,Serialize)]
 pub struct Module {
   pub name: ModuleName,
 
diff --git a/haskell/compiler/tests/test6/rs-output/test6/adl/test6.rs b/haskell/compiler/tests/test6/rs-output/test6/adl/test6.rs
index 8884731f..20538d39 100644
--- a/haskell/compiler/tests/test6/rs-output/test6/adl/test6.rs
+++ b/haskell/compiler/tests/test6/rs-output/test6/adl/test6.rs
@@ -8,7 +8,7 @@ use crate::test6::adl::sys::types::Either;
 use serde::Deserialize;
 use serde::Serialize;
 
-#[derive(Deserialize,PartialEq,Serialize)]
+#[derive(Clone,Deserialize,PartialEq,Serialize)]
 pub struct S {
   pub f_pair: Pair<i32, f64>,
 
diff --git a/rust/tests/src/test4/customtypes.rs b/rust/tests/src/test4/customtypes.rs
index 30eb70c5..4f2b47c7 100644
--- a/rust/tests/src/test4/customtypes.rs
+++ b/rust/tests/src/test4/customtypes.rs
@@ -7,7 +7,7 @@ use std::result;
 
 use crate::test4::adl::test4::CDate0;
 
-#[derive(Eq, PartialEq, Hash)]
+#[derive(Eq, PartialEq, Hash, Clone)]
 pub struct Date(NaiveDate);
 
 impl Serialize for Date {
@@ -38,7 +38,7 @@ pub mod datehelpers {
     }
 }
 
-#[derive(Eq, PartialEq, Hash)]
+#[derive(Eq, PartialEq, Hash, Clone)]
 pub struct CDate(NaiveDate);
 
 impl Serialize for CDate {