diff --git a/check-update.sh b/check-update.sh
new file mode 100755
index 0000000..ec87b34
--- /dev/null
+++ b/check-update.sh
@@ -0,0 +1,45 @@
+#!/usr/bin/bash
+
+set -e
+
+HMCL_CHANNEL="$1"
+HMCL_VERSION="$2"
+
+case "$HMCL_CHANNEL" in
+  stable|stable-preview)
+    HMCL_ARTIFACT_ID="hmcl-stable";;
+  dev|dev-preview)
+    HMCL_ARTIFACT_ID="hmcl-dev";;
+  *)
+    echo "Unknown channel: $HMCL_CHANNEL" >&2
+    exit 1
+    ;;
+esac
+
+if [[ "$HMCL_CHANNEL" == "dev-preview" ]]; then
+    END_CHAR=""
+else
+    END_CHAR=","
+fi
+
+if [[ ! "$HMCL_VERSION" =~ ^3(\.[0-9]+)+$ ]]; then
+    echo "Unsupported version: $HMCL_VERSION" >&2
+    exit 1
+fi
+
+MAVEN_CENTRAL_BASE="http://mirrors.cloud.tencent.com/nexus/repository/maven-public"
+
+HMCL_JAR_URL="$MAVEN_CENTRAL_BASE/org/glavo/hmcl/$HMCL_ARTIFACT_ID/$HMCL_VERSION/$HMCL_ARTIFACT_ID-$HMCL_VERSION.jar"
+HMCL_JAR_SHA1=$(curl $HMCL_JAR_URL.sha1)
+
+echo ""
+echo ""
+
+cat <<- EOF
+    "$HMCL_CHANNEL": {
+        "jar": "$HMCL_JAR_URL",
+        "jarsha1": "$HMCL_JAR_SHA1",
+        "universal": "https://hmcl.huangyuhui.net",
+        "version": "$HMCL_VERSION"
+    }$END_CHAR
+EOF