diff --git a/CHANGES.markdown b/CHANGES.markdown
--- a/CHANGES.markdown
+++ b/CHANGES.markdown
@@ -1,3 +1,8 @@
+1.0.1: 26 January 2014
+----------------------
+
+    - Add `Hashable (Options Cairo R2)` instance
+
 1.0: 25 November 2013
 ---------------------
 
diff --git a/diagrams-cairo.cabal b/diagrams-cairo.cabal
--- a/diagrams-cairo.cabal
+++ b/diagrams-cairo.cabal
@@ -1,5 +1,5 @@
 Name:                diagrams-cairo
-Version:             1.0
+Version:             1.0.1
 Synopsis:            Cairo backend for diagrams drawing EDSL
 Description:         A full-featured backend for rendering
                      diagrams using the cairo rendering engine.
@@ -63,7 +63,10 @@
                        containers >= 0.3 && < 0.6,
                        lens >= 3.8 && < 4,
                        data-default-class >= 0.0.1 && < 0.1,
-                       statestack >= 0.2 && < 0.3
+                       statestack >= 0.2 && < 0.3,
+                       hashable >= 1.1 && < 1.3
+  if impl(ghc < 7.6)
+    Build-depends: ghc-prim
   default-language:    Haskell2010
 
   if !os(windows)
diff --git a/src/Diagrams/Backend/Cairo/Internal.hs b/src/Diagrams/Backend/Cairo/Internal.hs
--- a/src/Diagrams/Backend/Cairo/Internal.hs
+++ b/src/Diagrams/Backend/Cairo/Internal.hs
@@ -1,4 +1,5 @@
 {-# LANGUAGE DeriveDataTypeable        #-}
+{-# LANGUAGE DeriveGeneric             #-}
 {-# LANGUAGE ExistentialQuantification #-}
 {-# LANGUAGE FlexibleContexts          #-}
 {-# LANGUAGE FlexibleInstances         #-}
@@ -51,21 +52,19 @@
 import qualified Graphics.Rendering.Cairo        as C
 import qualified Graphics.Rendering.Cairo.Matrix as CM
 
+import           Control.Exception               (try)
+import           Control.Lens                    hiding (transform, ( # ))
 import           Control.Monad                   (when)
 import qualified Control.Monad.StateStack        as SS
 import           Control.Monad.Trans             (lift, liftIO)
 import           Data.Default.Class
+import qualified Data.Foldable                   as F
+import           Data.Hashable                   (Hashable)
 import           Data.List                       (isSuffixOf)
 import           Data.Maybe                      (catMaybes, fromMaybe, isJust)
 import           Data.Tree
-
-import           Control.Lens                    hiding (transform, ( # ))
-
-import           Control.Exception               (try)
-
-import qualified Data.Foldable                   as F
-
 import           Data.Typeable
+import           GHC.Generics                    (Generic)
 
 -- | This data declaration is simply used as a token to distinguish
 --   the cairo backend: (1) when calling functions where the type
@@ -89,8 +88,10 @@
                 --   action will do nothing, but the @Render ()@
                 --   action can be used (/e.g./ to draw to a Gtk
                 --   window; see the @diagrams-gtk@ package).
-  deriving (Eq, Ord, Read, Show, Bounded, Enum, Typeable)
+  deriving (Eq, Ord, Read, Show, Bounded, Enum, Typeable, Generic)
 
+instance Hashable OutputType
+
 -- | Custom state tracked in the 'RenderM' monad.
 data CairoState
   = CairoState { _accumStyle :: Style R2
@@ -141,7 +142,7 @@
           , _cairoOutputType :: OutputType -- ^ the output format and associated options
           , _cairoBypassAdjust  :: Bool    -- ^ Should the 'adjustDia' step be bypassed during rendering?
           }
-    deriving Show
+    deriving (Show, Generic)
 
   doRender _ (CairoOptions file size out _) (C r) = (renderIO, r')
     where r' = runRenderM r
@@ -184,6 +185,8 @@
 instance Monoid (Render Cairo R2) where
   mempty  = C $ return ()
   (C rd1) `mappend` (C rd2) = C (rd1 >> rd2)
+
+instance Hashable (Options Cairo R2)
 
 renderRTree :: RTree Cairo R2 a -> Render Cairo R2
 renderRTree (Node (RPrim accTr p) _) = render Cairo (transform accTr p)