diff --git a/Cargo.lock b/Cargo.lock
index 8ba9ad058..a163c6ce9 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -966,6 +966,7 @@ dependencies = [
  "serde",
  "serde_json",
  "simple_logger",
+ "tempfile",
 ]
 
 [[package]]
diff --git a/packages/cw-schema-codegen/Cargo.toml b/packages/cw-schema-codegen/Cargo.toml
index 984819e37..581468a6e 100644
--- a/packages/cw-schema-codegen/Cargo.toml
+++ b/packages/cw-schema-codegen/Cargo.toml
@@ -28,3 +28,4 @@ insta = "1.40.0"
 rand = { version = "0.8.5", features = ["min_const_gen"] }
 serde = { workspace = true, features = ["derive"] }
 serde_json = "1.0.128"
+tempfile = "3.14.0"
diff --git a/packages/cw-schema-codegen/tests/python_tpl.rs b/packages/cw-schema-codegen/tests/python_tpl.rs
index 347d977b0..60764c8ca 100644
--- a/packages/cw-schema-codegen/tests/python_tpl.rs
+++ b/packages/cw-schema-codegen/tests/python_tpl.rs
@@ -56,7 +56,7 @@ fn simple_enum() {
 
 macro_rules! validator {
     ($typ:ty) => {{
-        let a: Box<dyn FnOnce(&str) -> ()> = Box::new(|output| {
+        let a: Box<dyn FnOnce(&str)> = Box::new(|output| {
             serde_json::from_str::<$typ>(output).unwrap();
         });
         a
@@ -130,7 +130,7 @@ fn assert_validity() {
 
         let mut file = tempfile::NamedTempFile::with_suffix(".py").unwrap();
         file.write_all(schema_output.as_bytes()).unwrap();
-        file.write(
+        file.write_all(
             format!(
                 "import sys; print({type_name}.model_validate_json('{example}').model_dump_json())"
             )