diff --git a/build/Dockerfile-ppc64le b/build/Dockerfile-ppc64le
index 2b20d46..dcef6ee 100644
--- a/build/Dockerfile-ppc64le
+++ b/build/Dockerfile-ppc64le
@@ -13,7 +13,9 @@
 # limitations under the License.
 #
 
-FROM quay.io/operator-framework/helm-operator-ppc64le:v1.3.0
+FROM quay.io/operator-framework/helm-operator@sha256:9970ce163b8b943352c62017b4001b7c34afd287d0fc2b56b55c8b172a7aa495
+
+
 
 ARG VCS_REF
 ARG VCS_URL
diff --git a/build/Dockerfile-s390x b/build/Dockerfile-s390x
index a95a98f..6ce97ea 100644
--- a/build/Dockerfile-s390x
+++ b/build/Dockerfile-s390x
@@ -13,7 +13,7 @@
 # limitations under the License.
 #
 
-FROM quay.io/operator-framework/helm-operator-s390x:v1.3.0
+FROM quay.io/operator-framework/helm-operator@sha256:60901e28d91ecc69f308722beffac940c95258b960a653f8ae21d7339c69c4a8
 
 ARG VCS_REF
 ARG VCS_URL