diff --git a/google-server-api.cabal b/google-server-api.cabal
--- a/google-server-api.cabal
+++ b/google-server-api.cabal
@@ -5,7 +5,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           google-server-api
-version:        0.4.0.1
+version:        0.4.0.2
 synopsis:       Google APIs for server to server applications
 description:    This library provides a way to use Google API for server to server applications.
 category:       Web
diff --git a/src/Google/Response.hs b/src/Google/Response.hs
--- a/src/Google/Response.hs
+++ b/src/Google/Response.hs
@@ -15,6 +15,7 @@
   , GmailSend(..)
   , GmailList(..)
   , GmailMessage(..)
+  , ExtendedProperties(..)
   , FileResource(..)
   , FileList(..)
   , MediaContent(..)