diff --git a/Dockerfile b/Dockerfile
index 187dee5..ff27704 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 ############################
 # STEP 1 build executable binary
 ############################
-FROM golang:1.21-alpine AS builder
+FROM golang:1.21.6-alpine AS builder
 
 # Install git.
 # Git is required for fetching the dependencies.