diff --git a/setup.py b/setup.py
index 188fb13..50b6560 100644
--- a/setup.py
+++ b/setup.py
@@ -29,7 +29,7 @@
 
 setup(
     name='json5',
-    packages=find_packages(),
+    packages=find_packages(exclude=['tests']),
     entry_points={
         'console_scripts': [
             'pyjson5=json5.tool:main',