diff --git a/requirements.txt b/requirements.txt
index 8c11f53..fbd601f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,7 +29,7 @@ google-auth-httplib2==0.0.3
 google-auth-oauthlib==0.4.1
 gpiozero==1.5.1
 gtasks==0.1.3
-httplib2==0.14.0
+httplib2==0.19.0
 ics==0.5
 idna==2.8
 ipaddress==1.0.17