diff --git a/setup.py b/setup.py
index 696fc4028d0..b286a4f2031 100644
--- a/setup.py
+++ b/setup.py
@@ -10,7 +10,8 @@
     "six>=1.10.0",
     "setuptools",
     "attrs>=17.4.0",
-    "more-itertools>=4.0.0",
+    'more-itertools>=4.0.0,<6.0.0;python_version<="2.7"',
+    'more-itertools>=4.0.0;python_version>"2.7"',
     "atomicwrites>=1.0",
     'funcsigs;python_version<"3.0"',
     'pathlib2>=2.2.0;python_version<"3.6"',