diff --git a/requirements.txt b/requirements.txt
index 23d6cec..02c5556 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ more-itertools==4.3.0
 pkg-resources==0.0.0
 pluggy==0.8.0
 protobuf==3.6.1
-py==1.7.0
+py==1.10.0
 pysha3==1.0.2
 pytest==3.9.1
 pytest-cov==2.6.0