diff --git a/images/aws/bootc-base/Containerfile b/images/aws/bootc-base/Containerfile
index 792bac2..09fdba3 100644
--- a/images/aws/bootc-base/Containerfile
+++ b/images/aws/bootc-base/Containerfile
@@ -1,4 +1,4 @@
-FROM quay.io/centos-bootc/centos-bootc:stream9
+FROM quay.io/centos-bootc/centos-bootc:stream9@sha256:51772f7f59484339db6104694902f76a28b0fa62824669361d1331c40ce8031b
 
 COPY files/ /
 COPY scripts/ /tmp/scripts/