diff --git a/nanomonsv/version.py b/nanomonsv/version.py
index 5376912..93519d5 100644
--- a/nanomonsv/version.py
+++ b/nanomonsv/version.py
@@ -1,4 +1,4 @@
 #! /usr/bin/env python3
 
-__version__ = "0.5.1b1"
+__version__ = "0.5.1"