diff --git a/hack/stack.sh b/hack/stack.sh
index b9d8dc2b..8d5e6386 100755
--- a/hack/stack.sh
+++ b/hack/stack.sh
@@ -15,7 +15,7 @@
 # under the License.
 
 # Versions to test
-CAPI_VERSION=${CAPI_VERSION:-v1.4.4}
+CAPI_VERSION=${CAPI_VERSION:-v1.5.1}
 CAPO_VERSION=${CAPO_VERSION:-v0.8.0}
 
 # Setup folders for DevStack