diff --git a/requirements.txt b/requirements.txt
index fd7b0e56..e1e17074 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ docopt >= 0.6.2, < 0.6.999
 gensim >= 3.8.1
 hanziconv >= 0.3.2, < 0.3.999
 mmh3 >= 2.5.1, < 2.5.999
-more-itertools >= 7.2.0, < 7.2.999
+more-itertools >= 7.2.0, < 9.0.1
 mwapi >= 0.5.0, < 0.6.999
 mwbase >= 0.1.4, < 0.1.999
 mwtypes >= 0.2.0, < 0.3.999