diff --git a/sstpd/__init__.py b/sstpd/__init__.py
index 1cc7d79..e3b7f11 100644
--- a/sstpd/__init__.py
+++ b/sstpd/__init__.py
@@ -1,7 +1,7 @@
 """A Secure Socket Tunneling Protocol (SSTP) server.
 https://github.com/sorz/sstp-server
 """
-__version__ = '0.5.0'
+__version__ = '0.5.1'
 
 
 def run():