diff --git a/contrib/jenkins.sh b/contrib/jenkins.sh
index 27f0245..91dcdd2 100755
--- a/contrib/jenkins.sh
+++ b/contrib/jenkins.sh
@@ -19,7 +19,7 @@
 . venv/bin/activate
 pip install pytlv
 pip install pyyaml
-pip install cmd2
+pip install cmd2==1.5
 pip install jsonpath-ng
 pip install construct
 pip install bidict