diff --git a/setup.py b/setup.py
index 301e4c7..ee9b540 100644
--- a/setup.py
+++ b/setup.py
@@ -27,8 +27,7 @@ setup_options = dict(
     maintainer_email="larsmans@gmail.com",
     license="MIT",
     url="https://github.com/larsmans/seqlearn",
-    packages=["seqlearn", "seqlearn._utils", "seqlearn._decode",
-              "seqlearn/tests"],
+    packages=["seqlearn", "seqlearn._utils", "seqlearn._decode"],
     classifiers=[
         "Development Status :: 3 - Alpha",
         "Intended Audience :: Developers",