diff --git a/Cargo.lock b/Cargo.lock
index be1270f4fa2..3b68b5004d8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -2417,7 +2417,6 @@ dependencies = [
  "noirc_errors",
  "regex",
  "rustc-hash",
- "serde",
  "serde_json",
  "small-ord-set",
  "smol_str",
diff --git a/crates/noirc_frontend/Cargo.toml b/crates/noirc_frontend/Cargo.toml
index 1f902d2d399..c2d6e579c2c 100644
--- a/crates/noirc_frontend/Cargo.toml
+++ b/crates/noirc_frontend/Cargo.toml
@@ -16,7 +16,6 @@ iter-extended.workspace = true
 chumsky.workspace = true
 thiserror.workspace = true
 smol_str.workspace = true
-serde.workspace = true
 serde_json.workspace = true
 rustc-hash = "1.1.0"
 small-ord-set = "0.1.3"
diff --git a/crates/noirc_frontend/src/ast/expression.rs b/crates/noirc_frontend/src/ast/expression.rs
index b1ef26a7cd8..8b15f6e3b9d 100644
--- a/crates/noirc_frontend/src/ast/expression.rs
+++ b/crates/noirc_frontend/src/ast/expression.rs
@@ -382,8 +382,7 @@ pub enum FunctionReturnType {
 
 /// Describes the types of smart contract functions that are allowed.
 /// - All Noir programs in the non-contract context can be seen as `Secret`.
-#[derive(serde::Serialize, serde::Deserialize, Debug, Copy, Clone, PartialEq, Eq)]
-#[serde(rename_all = "snake_case")]
+#[derive(Debug, Copy, Clone, PartialEq, Eq)]
 pub enum ContractFunctionType {
     /// This function will be executed in a private
     /// context.