diff --git a/pyproject.toml b/pyproject.toml
index 8df41bfc71..4c73c438fa 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,8 +26,10 @@ warn_return_any = false
 
 # Enable optional errors.
 enable_error_code = [
+    "redundant-self",
     "redundant-expr",
     "truthy-bool",
+    "truthy-iterable",
     "ignore-without-code",
     "unused-awaitable",
 ]