diff --git a/setup.py b/setup.py
index 59dd9ce782..05e1c8b9c0 100644
--- a/setup.py
+++ b/setup.py
@@ -95,7 +95,6 @@
             'h5py',
             'scipy',
             'scikit-learn',
-            'gym[box2d]==0.25.1',
             'pettingzoo<=1.22.3',
             'opencv-python',  # pypy incompatible
             'pyecharts',