diff --git a/setup.py b/setup.py
index 8a3fa87..02acbf4 100644
--- a/setup.py
+++ b/setup.py
@@ -15,6 +15,7 @@
     py_modules=['jack'],
     setup_requires=['CFFI>=1.0'],
     install_requires=['CFFI>=1.0'],
+    python_requires='>=2.6',
     extras_require={'NumPy': ['NumPy']},
     cffi_modules=['jack_build.py:ffibuilder'],
     author='Matthias Geier',