diff --git a/testing_requirements.txt b/testing_requirements.txt
index 603e7e1..30534d6 100644
--- a/testing_requirements.txt
+++ b/testing_requirements.txt
@@ -1,6 +1,6 @@
 contextlib2==0.5.4
 coverage==4.3.4
-py==1.4.33
+py==1.10.0
 pytest==3.0.7
 pytest-cov==2.4.0
 retrying==1.3.3