diff --git a/setup.py b/setup.py
index <HASH>..<HASH> 100644
--- a/setup.py
+++ b/setup.py
@@ -73,7 +73,7 @@ setup(
         "ukpostcodeparser>=1.1.1",
         "mock",
         "pytest>=3.8.0,<3.9",
-        "more-itertools<6.0.0",
+        "more-itertools<6.0.0 ; python_version < '3.0'",
         "random2==1.0.1",
         "freezegun==0.3.11",
     ],
Pin more-itertools only for python < <I> (#<I>)