diff --git a/Dockerfile b/Dockerfile
index 355ba8b..4ecac5a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.21-alpine3.18@sha256:f6a4b0948790b1798be9af7285fc0c0f12a470e98468372a884bf622b66d8c75 AS builder
+FROM golang:1.21-alpine3.18@sha256:9390a996e9f957842f07dff1e9661776702575dd888084e72d86eaa382ad56e3 AS builder
 
 WORKDIR /corn-util
 COPY go.mod go.sum ./