diff --git a/charm-helpers-tests.yaml b/charm-helpers-tests.yaml
index 48b12f6f..62c87f0e 100644
--- a/charm-helpers-tests.yaml
+++ b/charm-helpers-tests.yaml
@@ -1,4 +1,4 @@
-branch: lp:charm-helpers
+branch: lp:~cts-engineering/charm-helpers/neutron-mtu
 destination: tests/charmhelpers
 include:
     - contrib.amulet