diff --git a/src/gluonts/mx/prelude.py b/src/gluonts/mx/prelude.py
index 81b9b7ed79..e1820dba56 100644
--- a/src/gluonts/mx/prelude.py
+++ b/src/gluonts/mx/prelude.py
@@ -11,7 +11,7 @@
 # express or implied. See the License for the specific language governing
 # permissions and limitations under the License.
 
-# flake8: noqa: F401
+# flake8: noqa: F401, F403
 
 from .component import *
 from .serde import *
diff --git a/src/gluonts/torch/prelude.py b/src/gluonts/torch/prelude.py
index 8a981851d4..a66ac9fd05 100644
--- a/src/gluonts/torch/prelude.py
+++ b/src/gluonts/torch/prelude.py
@@ -11,7 +11,7 @@
 # express or implied. See the License for the specific language governing
 # permissions and limitations under the License.
 
-# flake8: noqa: F401
+# flake8: noqa: F401, F403
 
 from .component import *
 from .model.forecast_generator import *