diff --git a/requirements.txt b/requirements.txt
index ad634df..d37b60b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ fastecdsa==1.6.5
 idna==2.7
 more-itertools==4.3.0
 pluggy==0.8.0
-py==1.7.0
+py==1.10.0
 pytest==3.9.2
 pytest-cov==2.6.0
 requests==2.20.0