diff --git a/update.sh b/update.sh
new file mode 100755
index 0000000..bf27281
--- /dev/null
+++ b/update.sh
@@ -0,0 +1,13 @@
+#!/usr/bin/env bash
+
+set -eou pipefail
+
+VERSION="$1"
+VERSION_DIR=$(echo "$VERSION" | cut -d '.' -f 1,2 -)
+
+AMD64_SHA256=$(curl -sSL https://github.com/emqx/emqx/releases/download/v${VERSION}/emqx-${VERSION}-debian11-amd64.tar.gz.sha256)
+ARM64_SHA256=$(curl -sSL https://github.com/emqx/emqx/releases/download/v${VERSION}/emqx-${VERSION}-debian11-arm64.tar.gz.sha256)
+
+sed -i'' -e "s/EMQX_VERSION=.*/EMQX_VERSION=${VERSION}/" $VERSION_DIR/Dockerfile
+sed -i'' -e "s/AMD64_SHA256=.*/AMD64_SHA256=${AMD64_SHA256}/" $VERSION_DIR/Dockerfile
+sed -i'' -e "s/ARM64_SHA256=.*/ARM64_SHA256=${ARM64_SHA256}/" $VERSION_DIR/Dockerfile