diff --git a/requirements.txt b/requirements.txt
index e8b5bc6..27adaef 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -17,7 +17,7 @@ seaborn
 pyyaml
 requests
 RISE
-shimmy
+shimmy~=1.3.0
 stable-baselines3
 traitlets==5.9.0
 # traitlets