diff --git a/charm-prep.sh b/charm-prep.sh
index 0f29b41..d41ad09 100755
--- a/charm-prep.sh
+++ b/charm-prep.sh
@@ -1,6 +1,7 @@
 #!/bin/bash
 
 rm -rf lib/*
+rm adapters.py interface_ceph_client.py ops ops_openstack.py
 
 pip install -t lib/ git+https://github.com/juju/charm-helpers.git