diff --git a/MANIFEST.in b/MANIFEST.in
index da2696e..a944f12 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -4,3 +4,4 @@ include MANIFEST.in
 include NEWS
 include README.rst
 include .gitignore
+recursive-include extras/tests *
diff --git a/setup.py b/setup.py
index d582dfd..3592268 100755
--- a/setup.py
+++ b/setup.py
@@ -51,6 +51,5 @@ def get_long_description():
         ],
       packages=[
         'extras',
-        'extras.tests',
         ],
       cmdclass=cmdclass)