diff --git a/.github/workflows/builder.yml b/.github/workflows/builder.yml
index 566701b..630e9a6 100644
--- a/.github/workflows/builder.yml
+++ b/.github/workflows/builder.yml
@@ -5,10 +5,10 @@ on:
     inputs:
       builder-tag:
         description: golang cross builder tag name
-        default: v1.20.7-0
+        default: v1.21.0-0
       golang-version:
         description: golang version
-        default: '1.20.7'
+        default: '1.21.0'
       osxcross-git-hash:
         description: git commit hash of osx-cross project
         default: '50e86ebca7d14372febd0af8cd098705049161b9'
diff --git a/Dockerfile b/Dockerfile
index e503db6..6758b31 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ghcr.io/gythialy/golang-cross-builder:v1.20.6-0
+FROM ghcr.io/gythialy/golang-cross-builder:v1.21.0-0
 
 LABEL maintainer="Goren G<gythialy.koo+github@gmail.com>"
 LABEL org.opencontainers.image.source https://github.com/gythialy/golang-cross