diff --git a/tobiko/openstack/stacks/_nova.py b/tobiko/openstack/stacks/_nova.py
index ac33958dd..c27460295 100644
--- a/tobiko/openstack/stacks/_nova.py
+++ b/tobiko/openstack/stacks/_nova.py
@@ -58,7 +58,7 @@ class FlavorStackFixture(heat.HeatStackFixture):
 
 
 class CirrosFlavorStackFixture(FlavorStackFixture):
-    ram = 64
+    ram = 128
 
 
 def as_str(text):