diff --git a/cozeloop/internal/consts/__init__.py b/cozeloop/internal/consts/__init__.py
index 44ea376..2fa0c50 100644
--- a/cozeloop/internal/consts/__init__.py
+++ b/cozeloop/internal/consts/__init__.py
@@ -30,7 +30,7 @@
 
 STATUS_CODE_ERROR_DEFAULT = -1
 
-GLOBAL_TRACE_VERSION = 1
+GLOBAL_TRACE_VERSION = 0
 
 
 # System reserved tag fields.