diff --git a/deformable_gym/envs/mujoco/base_mjenv.py b/deformable_gym/envs/mujoco/base_mjenv.py
index 730b2cd..5582897 100644
--- a/deformable_gym/envs/mujoco/base_mjenv.py
+++ b/deformable_gym/envs/mujoco/base_mjenv.py
@@ -88,7 +88,7 @@ def reset(
         *,
         seed: Optional[int] = None,
         options: Optional[dict] = None,
-    ) -> tuple[NDArray[np.float64], dict[str, Any]]:
+    ) -> Tuple[NDArray[np.float64], dict[str, Any]]:
         """
         Resets the environment to its initial state.