diff --git a/cmd/user-identity-mapper/Dockerfile b/cmd/user-identity-mapper/Dockerfile
index dde315d..9f2b600 100644
--- a/cmd/user-identity-mapper/Dockerfile
+++ b/cmd/user-identity-mapper/Dockerfile
@@ -2,7 +2,7 @@
 # Builder image
 # See https://hub.docker.com/_/golang/
 ################################################################################################
-FROM golang:1.20 as builder
+FROM mirror.gcr.io/golang:1.20 as builder
 
 ARG OS=linux
 ARG ARCH=amd64