diff --git a/tutorials/SB3/connect_four/requirements.txt b/tutorials/SB3/connect_four/requirements.txt
index bf7c59673..e8ed650ab 100644
--- a/tutorials/SB3/connect_four/requirements.txt
+++ b/tutorials/SB3/connect_four/requirements.txt
@@ -1,3 +1,4 @@
 pettingzoo[classic]>=1.24.0
 stable-baselines3>=2.0.0
 sb3-contrib>=2.0.0
+gymnasium<=0.29.1