diff --git a/setup.py b/setup.py
index f29b48eb..6b5bb218 100644
--- a/setup.py
+++ b/setup.py
@@ -37,7 +37,7 @@ setup(
     author="Simon Willison",
     license="Apache License, Version 2.0",
     url="https://github.com/simonw/datasette",
-    packages=find_packages(),
+    packages=find_packages(exclude='tests'),
     package_data={"datasette": ["templates/*.html"]},
     include_package_data=True,
     install_requires=[