diff --git a/crates/aiken-lang/src/tipo.rs b/crates/aiken-lang/src/tipo.rs
index 5ffc2c57..95442cae 100644
--- a/crates/aiken-lang/src/tipo.rs
+++ b/crates/aiken-lang/src/tipo.rs
@@ -23,14 +23,14 @@ mod pattern;
 mod pipe;
 pub mod pretty;
 
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
 pub struct TypeAliasAnnotation {
     pub alias: String,
     pub parameters: Vec<String>,
     pub annotation: Annotation,
 }
 
-#[derive(Debug, Clone, PartialEq, serde::Serialize, serde::Deserialize)]
+#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
 pub enum Type {
     /// A nominal (named) type such as `Int`, `Float`, or a programmer defined
     /// custom type such as `Person`. The type can take other types as