diff --git a/packages/google-cloud-language/setup.py b/packages/google-cloud-language/setup.py
index 7180ed0b2cfb..523028b31273 100644
--- a/packages/google-cloud-language/setup.py
+++ b/packages/google-cloud-language/setup.py
@@ -51,7 +51,7 @@
 
 
 REQUIREMENTS = [
-    'google-cloud-core >= 0.26.0, < 0.27dev',
+    'google-cloud-core >= 0.27.0, < 0.28dev',
     'google-gax >= 0.15.14, < 0.16dev',
     'googleapis-common-protos[grpc] >= 1.5.2, < 2.0dev',
 ]