diff --git a/python/setup.py b/python/setup.py
index 4b0deb1..5742fd9 100644
--- a/python/setup.py
+++ b/python/setup.py
@@ -22,6 +22,10 @@ setup(
     packages=["olm"],
     setup_requires=["cffi>=1.0.0"],
     cffi_modules=["olm_build.py:ffibuilder"],
-    install_requires=["cffi>=1.0.0", "future", "typing"],
+    install_requires=[
+        "cffi>=1.0.0",
+        "future",
+        "typing;python_version<'3.5'"
+    ],
     zip_safe=False
 )