diff --git a/PY_AWS/chalice/requirements-dev.txt b/PY_AWS/chalice/requirements-dev.txt
index 6977bfc..dc39a35 100644
--- a/PY_AWS/chalice/requirements-dev.txt
+++ b/PY_AWS/chalice/requirements-dev.txt
@@ -16,7 +16,7 @@ pydocstyle==2.0.0
 
 # Test requirements
 pytest==3.5.0
-py==1.5.3
+py==1.10.0
 pygments==2.1.3
 mock==2.0.0
 requests==2.20.0