diff --git a/requirements.txt b/requirements.txt
index 16f02a5..ea86ebd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ chardet==3.0.4
 click==6.7
 Flask==0.10.1
 Flask-Cors==2.1.2
-httplib2==0.9.1
+httplib2==0.18.0
 ibmiotf==0.1.1
 idna==2.6
 iso8601==0.1.12