diff --git a/environment.yml b/environment.yml
index a8080d351d210be7baff5213f80874017fe82efb..dc4adcc2d26520a6f93e5eb8fcd141f46ad52481 100644
--- a/environment.yml
+++ b/environment.yml
@@ -9,7 +9,7 @@ channels:
   #  - nodefaults
 dependencies:
   - python
-  - gymnasium[box2d]
+  - gymnasium-box2d
   - pytorch
   - sympy
   - tqdm