diff --git a/requirements-dev.txt b/requirements-dev.txt
index d876929..5385e26 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -2,7 +2,7 @@
 atomicwrites==1.3.0
 more-itertools==7.0.0
 pluggy==0.11.0
-py==1.8.0
+py==1.10.0
 pytest==4.5.0
 six==1.12.0
 wcwidth==0.1.7