diff --git a/bytecode/src/bytecode.rs b/bytecode/src/bytecode.rs
index 6e9ef8613..6f3ebc604 100644
--- a/bytecode/src/bytecode.rs
+++ b/bytecode/src/bytecode.rs
@@ -660,6 +660,7 @@ impl fmt::Debug for CodeObject {
     }
 }
 
+#[derive(Serialize, Deserialize)]
 pub struct FrozenModule {
     pub code: CodeObject,
     pub package: bool,