diff --git a/requirements.txt b/requirements.txt
index 8df6097..b939827 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,7 +22,7 @@ elasticsearch==6.3.1
 elasticsearch-dsl==6.4.0
 et-xmlfile==1.0.1
 future==0.17.1
-httplib2==0.9.2
+httplib2==0.19.0
 idna==2.8
 itypes==1.1.0
 jdcal==1.4.1