diff --git a/requirements.txt b/requirements.txt
index 2211033..3e393ab 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ attrs==18.2.0
 certifi==2018.10.15
 chardet==3.0.4
 idna==2.7
-more-itertools==4.3.0
+more-itertools==8.1.0
 pluggy==0.8.0
 py==1.7.0
 PyJWT==1.6.4