diff --git a/setup.py b/setup.py
index d993baa..db4d70f 100644
--- a/setup.py
+++ b/setup.py
@@ -45,6 +45,7 @@ setup(
     ],
     install_requires=[
         'ftfy==4.4.3;python_version<"3.4"',
+        'ftfy==5.9;python_version<"3.6"',
         'ftfy;python_version>"2.7"',
         'mailchecker',
         'phonenumbers',