diff --git a/nnabla_rl/__init__.py b/nnabla_rl/__init__.py
index 935ecf8e..20806c2f 100644
--- a/nnabla_rl/__init__.py
+++ b/nnabla_rl/__init__.py
@@ -1,5 +1,5 @@
 # Copyright 2020,2021 Sony Corporation.
-# Copyright 2021,2022 Sony Group Corporation.
+# Copyright 2021,2022,2023 Sony Group Corporation.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -13,7 +13,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = '0.13.0.dev1'
+__version__ = '0.14.0.dev1'
 
 from nnabla_rl.logger import enable_logging, disable_logging  # noqa
 from nnabla_rl.scopes import eval_scope, is_eval_scope  # noqa
diff --git a/reproductions/algorithms/pybullet/icra2018qtopt/external_grasping_env/kuka_grasping_procedural_env.py b/reproductions/algorithms/pybullet/icra2018qtopt/external_grasping_env/kuka_grasping_procedural_env.py
index a1160c3c..74f62862 100644
--- a/reproductions/algorithms/pybullet/icra2018qtopt/external_grasping_env/kuka_grasping_procedural_env.py
+++ b/reproductions/algorithms/pybullet/icra2018qtopt/external_grasping_env/kuka_grasping_procedural_env.py
@@ -277,7 +277,7 @@ def _get_image_observation(self):
         # Extract RGB components only.
         img = Image.fromarray(np_img_arr[:, :, :3].astype(np.uint8))
         shape = (self._downsample_width, self._downsample_height)
-        img = img.resize(shape, Image.ANTIALIAS)
+        img = img.resize(shape, Image.LANCZOS)
         img = np.array(img)
         return img