diff --git a/setup.py b/setup.py
index f0521e8..92a8418 100644
--- a/setup.py
+++ b/setup.py
@@ -6,9 +6,9 @@ from setuptools import find_packages, setup
 
 
 def get_version(filename):
-    content = open(filename).read()
-    metadata = dict(re.findall("__([a-z]+)__ = '([^']+)'", content))
-    return metadata['version']
+    with open(filename) as fh:
+        metadata = dict(re.findall("__([a-z]+)__ = '([^']+)'", fh.read()))
+        return metadata['version']
 
 
 setup(