diff --git a/requirements.txt b/requirements.txt
index 09dbfb6..b50e15b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ google-cloud-language==1.3.0
 google-cloud-speech==1.3.1
 googleapis-common-protos==1.51.0
 grpcio==1.26.0
-httplib2==0.17.0
+httplib2==0.18.0
 idna==2.8
 itsdangerous==1.1.0
 Jinja2==2.11.1