diff --git a/oldstable/build/alpine-x64/Dockerfile b/oldstable/build/alpine-x64/Dockerfile
index 36d8d757..6b20205a 100644
--- a/oldstable/build/alpine-x64/Dockerfile
+++ b/oldstable/build/alpine-x64/Dockerfile
@@ -7,7 +7,7 @@
 
 # https://hub.docker.com/_/golang
 
-FROM amd64/golang:1.20.14-alpine3.18
+FROM amd64/golang:1.21.7-alpine3.18
 
 # https://docs.github.com/en/packages/learn-github-packages/connecting-a-repository-to-a-package
 LABEL org.opencontainers.image.source="https://github.com/atc0005/go-ci"