diff --git a/requirements.txt b/requirements.txt
index 0e2744912..85b8bb89b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,3 +2,4 @@ plaso>=20171118
 psq>=0.5.0
 google-api-python-client>=1.6.2
 google-cloud-pubsub==0.26.0
+google-cloud-core==0.26.0