diff --git a/setup.py b/setup.py
index 9c13695..a9bcc35 100644
--- a/setup.py
+++ b/setup.py
@@ -57,8 +57,9 @@
     package_data={"promise": ["py.typed"]},
     extras_require={"test": tests_require},
     install_requires=[
-        "typing>=3.6.4; python_version < '3.5'",
-        "six"
+        "typing>=3.6.4",
+        "python_version < '3.5'",
+        "six",
     ],
     tests_require=tests_require,
 )