diff --git a/oldstable/build/release/Dockerfile b/oldstable/build/release/Dockerfile
index dd59fa5f..62cb5211 100644
--- a/oldstable/build/release/Dockerfile
+++ b/oldstable/build/release/Dockerfile
@@ -7,7 +7,7 @@
 
 # https://hub.docker.com/_/golang
 
-FROM amd64/golang:1.21.8-bookworm
+FROM amd64/golang:1.21.9-bookworm
 
 # 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"