diff --git a/requirements.txt b/requirements.txt
index cb23ad5..fd9e3d4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -30,7 +30,7 @@ pbr==3.1.1                # via mock
 pip-conflict-checker==0.5.0
 pip-tools==1.10.2
 pluggy==0.6.0             # via pytest
-py==1.5.2                 # via pytest
+py==1.10.0                 # via pytest
 pycodestyle==2.3.1        # via flake8
 pyflakes==1.6.0           # via flake8
 pytest-cov==2.5.1