diff --git a/requirements-dev.txt b/requirements-dev.txt
index 61f007c..bc99b16 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -6,7 +6,7 @@ pyflakes==2.0.0
 # Deps do pytest
 py==1.5.3
 atomicwrites==1.0
-more-itertools==4.0.0
+more-itertools==10.6.0
 six==1.10.0
 attrs==17.4.0
 pluggy==0.6.0