diff --git a/Dockerfile b/Dockerfile
index 7cee0f32d3ee4..1b768f8b6d77b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,6 +3,7 @@
 FROM docker.io/library/golang:1.25-alpine3.22 AS build-env
 
 ARG GOPROXY=direct
+ARG GOTOOLCHAIN=auto
 
 ARG GITEA_VERSION
 ARG TAGS="sqlite sqlite_unlock_notify"
diff --git a/Dockerfile.rootless b/Dockerfile.rootless
index 8a6fa587e9d2d..6a79294a300c8 100644
--- a/Dockerfile.rootless
+++ b/Dockerfile.rootless
@@ -3,6 +3,7 @@
 FROM docker.io/library/golang:1.25-alpine3.22 AS build-env
 
 ARG GOPROXY=direct
+ARG GOTOOLCHAIN=auto
 
 ARG GITEA_VERSION
 ARG TAGS="sqlite sqlite_unlock_notify"