diff --git a/app/terraform/proxy/__init__.py b/app/terraform/proxy/__init__.py
index 123fd83..32875a6 100644
--- a/app/terraform/proxy/__init__.py
+++ b/app/terraform/proxy/__init__.py
@@ -134,10 +134,11 @@ class ProxyAutomation(TerraformAutomation):
     def import_state(self, state: Any) -> None:
         raise NotImplementedError()
 
-    def tf_prehook(self) -> Optional[Any]:
+    def tf_prehook(self) -> Optional[Any]:  # pylint: disable=useless-return
         self.create_missing_proxies()
         self.deprecate_orphaned_proxies()
         self.destroy_expired_proxies()
+        return None
 
     def tf_posthook(self, *, prehook_result: Any = None) -> None:
         self.import_state(self.tf_show())