diff --git a/.ci-operator.yaml b/.ci-operator.yaml
index 9a3f7b8fbf..844f0d26ad 100644
--- a/.ci-operator.yaml
+++ b/.ci-operator.yaml
@@ -1,4 +1,4 @@
 build_root_image:
   name: release
   namespace: openshift
-  tag: rhel-8-release-golang-1.19-openshift-4.14
+  tag: rhel-8-release-golang-1.20-openshift-4.14
diff --git a/Dockerfile.admission-webhook.ocp b/Dockerfile.admission-webhook.ocp
index 25f6badd0e..2f3ef60ee9 100644
--- a/Dockerfile.admission-webhook.ocp
+++ b/Dockerfile.admission-webhook.ocp
@@ -1,5 +1,5 @@
 # Dockerfile used by OSBS and by prow CI.
-FROM registry.ci.openshift.org/ocp/builder:rhel-8-golang-1.19-openshift-4.14 AS builder
+FROM registry.ci.openshift.org/ocp/builder:rhel-8-golang-1.20-openshift-4.14 AS builder
 WORKDIR /go/src/github.com/coreos/prometheus-operator
 COPY . .
 ENV GO111MODULE=on