diff --git a/requirements.txt b/requirements.txt
index bac3a14..fa18a50 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -8,7 +8,7 @@ idna==2.6
 more-itertools==4.2.0
 multidict==4.3.1
 pluggy==0.6.0
-py==1.5.3
+py==1.10.0
 pytemperature==1.0
 pytest==3.6.2
 python-dateutil==2.7.3