diff --git a/requirements.txt b/requirements.txt
index 4046d529e..0974fa7d9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,6 +2,6 @@ attrs==17.4.0
 cmake==0.9.0
 funcsigs==1.0.2
 pluggy==0.6.0
-py==1.5.2
+py==1.10.0
 pytest==3.4.0
 six==1.11.0
\ No newline at end of file