diff --git a/requirements.txt b/requirements.txt
index 360901a..db95210 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,7 +18,7 @@ MarkupSafe==1.0
 pathtools==0.1.2
 pbkdf2==1.3
 populus==1.9.0
-py==1.4.34
+py==1.10.0
 py-geth==1.9.0
 py-solc==1.2.2
 pycparser==2.18