diff --git a/setup.py b/setup.py
index 1c633b3a..89f642a7 100755
--- a/setup.py
+++ b/setup.py
@@ -52,6 +52,7 @@ def get_reqs(filename):
       long_description=long_description,
       long_description_content_type='text/markdown',
       install_requires=reqs,
+      python_requires='>=3.4',
       classifiers=[
           "Intended Audience :: Developers",
           "Operating System :: OS Independent",