diff --git a/Dockerfile b/Dockerfile
index 190fb7f..38cb524 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:alpine AS builder
+FROM golang:1.15.5-alpine3.12 AS builder
 
 RUN apk -v --no-progress --no-cache add git