diff --git a/Dockerfile b/Dockerfile
index 82a44dec..01083f49 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 # syntax = docker/dockerfile:1.3.0
 
 # build backend
-FROM golang:1.20.7-alpine as server-build
+FROM golang:1.21.5-alpine as server-build
 RUN --mount=type=cache,target=/var/cache/apk \
   apk add --update git