diff --git a/requirements.txt b/requirements.txt
index 2fc9875..9494cef 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,7 +23,7 @@ packaging==19.1
 pep8==1.7.1
 pluggy==0.12.0
 protobuf==3.9.0
-py==1.8.0
+py==1.10.0
 pyparsing==2.4.2
 pystan==2.19.0.0
 pytest==5.0.1