diff --git a/etc/dockerfile b/etc/dockerfile
index 53129c8..ff56220 100644
--- a/etc/dockerfile
+++ b/etc/dockerfile
@@ -1,4 +1,4 @@
-FROM golang:alpine AS build
+FROM golang:1.21.5-alpine AS build
 RUN apk add build-base git
 WORKDIR /src
 COPY . .