diff --git a/api_core/setup.py b/api_core/setup.py
index acd4ff58b4b9..dbb510283291 100644
--- a/api_core/setup.py
+++ b/api_core/setup.py
@@ -22,7 +22,7 @@
 
 name = 'google-api-core'
 description = 'Google API client core library'
-version = '1.3.0'
+version = '1.4.0'
 # Should be one of:
 # 'Development Status :: 3 - Alpha'
 # 'Development Status :: 4 - Beta'
@@ -39,7 +39,8 @@
     'futures>=3.2.0;python_version<"3.2"'
 ]
 extras = {
-    'grpc': 'grpcio>=1.8.2'
+    'grpc': 'grpcio>=1.8.2',
+    'grpcio-gcp': 'grpcio-gcp>=0.2.2'
 }
 
 
diff --git a/spanner/setup.py b/spanner/setup.py
index 2fbb0a782c87..8769e1af3eb7 100644
--- a/spanner/setup.py
+++ b/spanner/setup.py
@@ -30,7 +30,7 @@
 release_status = 'Development Status :: 5 - Production/Stable'
 dependencies = [
     'google-cloud-core<0.29dev,>=0.28.0',
-    'google-api-core[grpc]<2.0.0dev,>=1.1.0',
+    'google-api-core[grpc, grpcio-gcp]<2.0.0dev,>=1.4.0',
     'grpc-google-iam-v1<0.12dev,>=0.11.4',
 ]
 extras = {