diff --git a/requirements.txt b/requirements.txt
index 8db0d29..7501c94 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -106,7 +106,7 @@ prompt-toolkit==1.0.14
 protobuf==3.6.1
 psutil==5.2.2
 ptyprocess==0.5.1
-py==1.4.33
+py==1.11.0
 pycosat==0.6.3
 pycparser==2.17
 pycrypto==2.6.1