diff --git a/infra/gcb/requirements.txt b/infra/gcb/requirements.txt
index af53d16ae..584c701ba 100644
--- a/infra/gcb/requirements.txt
+++ b/infra/gcb/requirements.txt
@@ -15,7 +15,7 @@ google-resumable-media==0.3.1
 googleapis-common-protos==1.5.3
 grpc-google-iam-v1==0.11.4
 grpcio==1.12.0
-httplib2==0.11.3
+httplib2==0.18.0
 idna==2.6
 Jinja2==2.10.1
 MarkupSafe==1.0