diff --git a/default.nix b/default.nix
index fcede32..77b63b6 100644
--- a/default.nix
+++ b/default.nix
@@ -12,7 +12,7 @@ self: super: rec {
         patches = [
           ./strawberry-graphql.patch
         ];
-        propagatedBuildInputs = with self.python39Packages [
+        propagatedBuildInputs = with self.python39Packages; [
           typing-extensions
           graphql-core
           python-multipart