diff --git a/docs/mteam.groovy b/docs/mteam.groovy
index db57885..8c826d3 100644
--- a/docs/mteam.groovy
+++ b/docs/mteam.groovy
@@ -90,6 +90,10 @@ Map sync(PluginContext ctx) {
     }
 }
 
+Map sign(PluginContext ctx) {
+    return [message: "M-Team 不支持签到"]
+}
+
 List search(PluginContext ctx, Map params) {
     if (!ctx.site.authorization) return []
     try {