diff --git a/atramhasis-requirements-dev.txt b/atramhasis-requirements-dev.txt
index f2b5ad7..c41eb7a 100644
--- a/atramhasis-requirements-dev.txt
+++ b/atramhasis-requirements-dev.txt
@@ -6,7 +6,7 @@ pyramid-debugtoolbar==4.5
 # Testing
 pytest==4.3.0
 pytest-cov==2.6.1
-py==1.8.0
+py==1.10.0
 coveralls==1.6.0
 webtest==2.0.33
 mock==2.0.0