diff --git a/tutorials/SB3/waterworld/requirements.txt b/tutorials/SB3/waterworld/requirements.txt
index 87d3b18d7..3b40c33df 100644
--- a/tutorials/SB3/waterworld/requirements.txt
+++ b/tutorials/SB3/waterworld/requirements.txt
@@ -1,3 +1,4 @@
+pygame==2.6.0
 pettingzoo[sisl]>=1.24.0
 stable-baselines3>=2.0.0
 supersuit>=3.9.0