diff --git a/contrib/devstack/lib/mistral b/contrib/devstack/lib/mistral
index 20a1a055..6038aee5 100644
--- a/contrib/devstack/lib/mistral
+++ b/contrib/devstack/lib/mistral
@@ -159,6 +159,7 @@ function install_mistral {
 
 function install_mistral_pythonclient {
     git_clone $MISTRAL_PYTHONCLIENT_REPO $MISTRAL_PYTHONCLIENT_DIR $MISTRAL_PYTHONCLIENT_BRANCH
+    git --git-dir=$MISTRAL_PYTHONCLIENT_DIR/.git tag -d 2015.1.0b1 2015.1.0b2 2015.1.0b3 2015.1.0rc1 2015.1.0
     setup_package $MISTRAL_PYTHONCLIENT_DIR -e
 }