diff --git a/app/requirements.txt b/app/requirements.txt
index 0bcd642..c8c114e 100644
--- a/app/requirements.txt
+++ b/app/requirements.txt
@@ -3,7 +3,7 @@ DateTime==4.3
 decorator==4.4.2
 Flask==1.1.2
 future==0.18.2
-httplib2==0.18.1
+httplib2==0.19.0
 icalendar==4.0.6
 idna==2.9
 itsdangerous==1.1.0