diff --git a/Dockerfile b/Dockerfile
index 09d5c7ff..8fea746f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # Build the manager binary
-FROM registry.access.redhat.com/ubi9/go-toolset:latest as base
+FROM registry.access.redhat.com/ubi9/go-toolset:latest@sha256:2dc44e9ae10db3f7cfb06a0063e9d792350fb004a65bf59f4268c164cacffe54 as base
 
 WORKDIR /workspace
 
diff --git a/build/Dockerfile.pr b/build/Dockerfile.pr
index 89cfb023..a15ab9aa 100644
--- a/build/Dockerfile.pr
+++ b/build/Dockerfile.pr
@@ -1,4 +1,4 @@
-FROM registry.access.redhat.com/ubi9/go-toolset:latest
+FROM registry.access.redhat.com/ubi9/go-toolset:latest@sha256:2dc44e9ae10db3f7cfb06a0063e9d792350fb004a65bf59f4268c164cacffe54
 
 USER 0
 RUN dnf install -y openssh-clients git podman make which go jq python3