--- a/setup.py
+++ b/setup.py
@@ -32,7 +32,7 @@ setup(
         "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",
     ],
-    packages=find_packages("src", exclude=("exampleproj",)),
+    packages=find_packages("src", exclude=("exampleproj", "*.tests", "*.tests.*")),
     package_dir={"": "src"},
     extras_require={
         "scripts": [