diff --git a/fb.cabal b/fb.cabal
--- a/fb.cabal
+++ b/fb.cabal
@@ -1,5 +1,5 @@
 name:              fb
-version:           0.4
+version:           0.4.0.1
 license:           BSD3
 license-file:      LICENSE
 author:            Felipe Lessa
diff --git a/src/Facebook.hs b/src/Facebook.hs
--- a/src/Facebook.hs
+++ b/src/Facebook.hs
@@ -35,6 +35,7 @@
     , getObject
     , postObject
     , Id(..)
+    , Argument
 
       -- * Exceptions
     , FacebookException(..)