diff --git a/common/src/main/java/com/xypower/common/MicroPhotoContext.java b/common/src/main/java/com/xypower/common/MicroPhotoContext.java
index 275ceb5d..08b730f5 100644
--- a/common/src/main/java/com/xypower/common/MicroPhotoContext.java
+++ b/common/src/main/java/com/xypower/common/MicroPhotoContext.java
@@ -50,6 +50,8 @@ public class MicroPhotoContext {
     public final static int DEFAULT_HEARTBEAT_FOR_SHARED_NW = 10;  // minutes
     public final static int DEFAULT_QUICK_HEARTBEAT = 60;  // second
 
+    public static final long BUILD_TIME_WO_SID_20250418 = 1744905600000L;
+
     public static class AppConfig {
         public String cmdid;
         public String server;