diff --git a/Dockerfile b/Dockerfile
index e9f2c95..14203cb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM golang:1.21-alpine3.18@sha256:1e101d79b977864248a864f58c7763ca31b0376e1f38ac6eee035f0e1a42a729 AS builder
+FROM golang:1.21-alpine3.18@sha256:3bd447580bc0df66bada3d8e38f37ca85faf66d6a0e37f0ccba287eaf5962757 AS builder
 
 WORKDIR /corn-util
 COPY go.mod go.sum ./