diff --git a/setup.py b/setup.py
index 0c736ab3c..f48c5068e 100644
--- a/setup.py
+++ b/setup.py
@@ -30,7 +30,7 @@
 release_status = "Development Status :: 4 - Beta"
 dependencies = [
     "google-api-core[grpc] >= 1.14.0, < 2.0.0dev",
-    "google-cloud-core >= 1.0.0, < 2.0dev",
+    "google-cloud-core >= 1.0.3, < 2.0dev",
     "pytz",
 ]
 extras = {}