diff --git a/MANIFEST.in b/MANIFEST.in
index 7669592c5..a8793d17b 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,6 +1,7 @@
 recursive-include pymdownx *.py
 recursive-include docs *
 recursive-include tests *.txt *.html *.yml *.py *.css
+recursive-exclude site *
 include setup.py
 include setup.cfg
 include run_tests.py
diff --git a/setup.py b/setup.py
index df6e22b3e..dcb6c4f6a 100644
--- a/setup.py
+++ b/setup.py
@@ -55,7 +55,7 @@ def get_version():
     author='Isaac Muse',
     author_email='Isaac.Muse [at] gmail.com',
     url='https://github.com/facelessuser/pymdown-extensions',
-    packages=find_packages(),
+    packages=find_packages(exclude=['tools', 'tests']),
     install_requires=[
         'Markdown>=2.6.0,<3'
     ],