diff --git a/superset/utils/json.py b/superset/utils/json.py
index 50a76d1a7..8709e199b 100644
--- a/superset/utils/json.py
+++ b/superset/utils/json.py
@@ -211,7 +211,7 @@ def dumps(  # pylint: disable=too-many-arguments
             cls=cls,
         )
     except UnicodeDecodeError:
-        results_string = simplejson.dumps(  # type: ignore[call-overload]
+        results_string = simplejson.dumps(
             obj,
             default=default,
             allow_nan=allow_nan,