diff --git a/Dockerfile b/Dockerfile
index faaf7c5..6e208ab 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,4 @@
-# Debian GNU/Linux 10 (1.13.10-buster)
-FROM golang:1.16-buster
+FROM golang:1.21.0-alpine3.17
 
 # copy entrypoint file
 COPY entrypoint.go /usr/bin/entrypoint.go