diff --git a/Database/Cayley/Client.hs b/Database/Cayley/Client.hs
--- a/Database/Cayley/Client.hs
+++ b/Database/Cayley/Client.hs
@@ -1,12 +1,12 @@
-{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE OverloadedStrings,FlexibleContexts #-}
 
 module Database.Cayley.Client (
+      Quad (..)
     -- * Connect & query
-      defaultCayleyConfig
+    , defaultCayleyConfig
     , connectCayley
     , query
     -- * REST API operations
-    , Quad (..)
     , writeQuad
     , deleteQuad
     , writeQuads
@@ -132,6 +132,9 @@
             (toRequestBody qs)
 
 -- | Write a N-Quad file.
+--
+-- >λ> writeNQuadFile conn "testdata.nq" >>= successfulResults
+--
 writeNQuadFile c p =
     runReaderT (writenq (getManager c) p) (getConfig c)
   where
diff --git a/cayley-client.cabal b/cayley-client.cabal
--- a/cayley-client.cabal
+++ b/cayley-client.cabal
@@ -1,5 +1,5 @@
 name:                cayley-client
-version:             0.1.2.0
+version:             0.1.2.1
 stability:           Experimental
 synopsis:            A Haskell client for Cayley graph database
 description:         cayley-client implements the RESTful API of the Cayley database graph.
@@ -20,5 +20,5 @@
 library
   exposed-modules:     Database.Cayley.Client, Database.Cayley.Types, Database.Cayley.Internal
   other-extensions:    OverloadedStrings
-  build-depends:       base >=4.7 && <4.8, mtl >=2.1 && <2.2, transformers >=0.3 && <0.4, attoparsec >=0.12 && <0.13, bytestring >=0.10 && <0.11, text >=1.2 && <1.3, vector >=0.10 && <0.11, http-conduit >=2.1 && <2.2, http-client >=0.4 && <0.5, aeson >=0.8 && <0.9, lens >= 4.6.0.1, lens-aeson >=1.0.0.3, unordered-containers >=0.2 && <0.3, exceptions >= 0.6 && <0.7
+  build-depends:       base >=4.7 && <4.9, mtl >=2.1 && <2.3, transformers >=0.3 && <0.5, attoparsec >=0.12 && <0.13, bytestring >=0.10 && <0.11, text >=1.2 && <1.3, vector >=0.10 && <0.11, http-conduit >=2.1 && <2.2, http-client >=0.4 && <0.5, aeson >=0.8 && <0.9, lens >= 4.6.0.1, lens-aeson >=1.0.0.3, unordered-containers >=0.2 && <0.3, exceptions >= 0.6 && <0.7
   default-language:    Haskell2010