diff --git a/mmcv/version.py b/mmcv/version.py
index 921a14cf4a..896b9058be 100644
--- a/mmcv/version.py
+++ b/mmcv/version.py
@@ -1,6 +1,6 @@
 # Copyright (c) Open-MMLab. All rights reserved.
 
-__version__ = '1.3.8'
+__version__ = '1.3.9'
 
 
 def parse_version_info(version_str: str) -> tuple: