diff --git a/devstack-vm-gate.sh b/devstack-vm-gate.sh
index 3d45bd1f..adf2bce1 100755
--- a/devstack-vm-gate.sh
+++ b/devstack-vm-gate.sh
@@ -48,6 +48,7 @@ SYSLOG=True
 SCREEN_LOGDIR=$DEST/screen-logs
 FIXED_RANGE=10.1.0.0/24
 FIXED_NETWORK_SIZE=256
+export OS_NO_CACHE=True
 EOF
 
 if [ "$DEVSTACK_GATE_TEMPEST" -eq "1" ]; then