diff --git a/setup.py b/setup.py
index 7a066f00f9d4afcde8d965035428d61cd501eb45..fa33e3c62f99451aae6da67c36c85b060d4a4c69 100644
--- a/setup.py
+++ b/setup.py
@@ -16,7 +16,7 @@ from setuptools import setup, find_packages
 
 setup(
     name="snakemake_wrappers",
-    version=0.4.1,
+    version="0.4.1",
     description="Snakemake wrappers and rules that can be included in snakemake workflows.",
     author="Blaise Li",
     author_email="blaise.li@normalesup.org",