diff --git a/dev-requirements.txt b/dev-requirements.txt
index fd1a6a9..ba7dfd8 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -74,7 +74,7 @@ pip-tools==4.3.0
 pluggy==0.13.1            # via pytest
 pre-commit-hooks==2.4.0
 pre-commit==1.20.0
-py==1.8.1                 # via pytest
+py==1.10.0                 # via pytest
 pyaml==19.12.0
 pycodestyle==2.5.0        # via flake8
 pycparser==2.19           # via cffi