diff --git a/Dockerfile.config-reloader.ocp b/Dockerfile.config-reloader.ocp
index c16806d85b1..be4d40910b0 100644
--- a/Dockerfile.config-reloader.ocp
+++ b/Dockerfile.config-reloader.ocp
@@ -1,5 +1,5 @@
 # Dockerfile used by OSBS and by prow CI.
-FROM registry.svc.ci.openshift.org/ocp/builder:rhel-8-golang-openshift-4.6 AS builder
+FROM registry.svc.ci.openshift.org/ocp/builder:rhel-8-golang-1.15-openshift-4.6 AS builder
 WORKDIR /go/src/github.com/coreos/prometheus-operator
 COPY . .
 ENV GO111MODULE=on