diff --git a/Dockerfile b/Dockerfile
index e7a4ddc..e111c85 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.21-alpine3.18@sha256:dec4d0cfdd87aeb2abd4437aa05afde81841c14d4a12ae6c61184effadc56d0e AS builder
+FROM golang:1.21-alpine3.18@sha256:1aab3f5434f4b6d013281b715b495aecfb9269b79ef5215c89e357f4838b2d09 AS builder
 
 WORKDIR /corn-util
 COPY go.mod go.sum ./