diff --git a/Dockerfile b/Dockerfile
index 328dda1b2..17b24f386 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM registry.ci.openshift.org/ocp/builder:rhel-9-golang-1.20-openshift-4.16 AS builder
+FROM registry.ci.openshift.org/ocp/builder:rhel-9-golang-1.21-openshift-4.16 AS builder
 WORKDIR  /go/src/github.com/openshift/oauth-proxy
 COPY . .
 RUN go build .