diff --git a/requirements.txt b/requirements.txt
index 805b51a..8fad38c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,7 @@
 paramiko
+argparse
 pbr>=0.5.21,<1.0
 prettytable
-Babel>=0.9.6
+Babel>=1.3
 pytz>=2010h
-six>=1.4.1
+six>=1.7.0