diff --git a/setup.py b/setup.py
index 9f8bdc24..bc4e1374 100755
--- a/setup.py
+++ b/setup.py
@@ -32,7 +32,7 @@ setup(
     include_package_data=True,
     zip_safe=False,
     platforms='any',
-    python_requires='>=2.7,!=3.0.*,!=3.1.*,!=3.2.*',
+    python_requires='>=2.7,!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*',
     install_requires=[
         'Werkzeug>=0.14',
         'Jinja2>=2.10',