diff --git a/iot-common-tenant/src/main/java/cc/iotkit/common/tenant/dao/TenantAware.java b/iot-common-tenant/src/main/java/cc/iotkit/common/tenant/dao/TenantAware.java
index 5168e62..6303f35 100755
--- a/iot-common-tenant/src/main/java/cc/iotkit/common/tenant/dao/TenantAware.java
+++ b/iot-common-tenant/src/main/java/cc/iotkit/common/tenant/dao/TenantAware.java
@@ -26,6 +26,6 @@ package cc.iotkit.common.tenant.dao;
 
 public interface TenantAware {
 
-    void setTenantId(String tenantId);
+    void setTenantId(Long tenantId);
 
 }