diff --git a/Simulator/PLASMA/requirements.txt b/Simulator/PLASMA/requirements.txt
index bb57568..4b55eac 100644
--- a/Simulator/PLASMA/requirements.txt
+++ b/Simulator/PLASMA/requirements.txt
@@ -26,7 +26,7 @@ dirspec==13.10
 duplicity==0.6.23
 gyp==0.1
 html5lib==0.999
-httplib2==0.8
+httplib2==0.19.0
 itsdangerous==0.24
 lockfile==0.8
 logilab-common==0.61.0