diff --git a/fastNLP/__init__.py b/fastNLP/__init__.py
index 5f18561a..4436e565 100644
--- a/fastNLP/__init__.py
+++ b/fastNLP/__init__.py
@@ -81,7 +81,7 @@ __all__ = [
     'logger',
     "init_logger_dist",
 ]
-__version__ = '0.5.0'
+__version__ = '0.5.5'
 
 import sys