diff --git a/setup.py b/setup.py
index 08baacc..4087fc6 100644
--- a/setup.py
+++ b/setup.py
@@ -76,7 +76,7 @@
 
     # You can just specify the packages manually here if your project is
     # simple. Or you can use find_packages().
-    packages=find_packages(exclude=['dist', 'docs', 'build']),
+    packages=find_packages(exclude=['dist', 'docs', 'build', 'tests', 'tests.*']),
 
     # Alternatively, if you want to distribute just a my_module.py, uncomment
     # this: