diff --git a/CHANGES b/CHANGES
--- a/CHANGES
+++ b/CHANGES
@@ -31,3 +31,7 @@
 
 0.1.2.3:
 		* export withGridLine
+
+0.1.2.4:
+		* bumped gtk dependency
+		* changed 'State' constructor to 'state' function to reflect mtl > 2
diff --git a/lib/Graphics/Rendering/Plot/Types.hs b/lib/Graphics/Rendering/Plot/Types.hs
--- a/lib/Graphics/Rendering/Plot/Types.hs
+++ b/lib/Graphics/Rendering/Plot/Types.hs
@@ -426,7 +426,7 @@
 -----------------------------------------------------------------------------
 
 dataInPlot' :: State DataSeries a -> State PlotData a
-dataInPlot' m = State $ \s -> let (a,d') = runState m (_data s)
+dataInPlot' m = state $ \s -> let (a,d') = runState m (_data s)
                                   in (a,s { _data = d'})
 
 dataInPlot :: Data a -> Plot a
@@ -435,7 +435,7 @@
 -----------------------------------------------------------------------------
 
 legendInPlot' :: State (Maybe LegendData) a -> State PlotData a
-legendInPlot' m = State $ \s -> let l = _legend s
+legendInPlot' m = state $ \s -> let l = _legend s
                                     (a,legend) = runState m l
                                 in (a,s { _legend = legend})
 
@@ -445,7 +445,7 @@
 -----------------------------------------------------------------------------
 
 annoteInPlot' :: State Annotations a -> State PlotData a
-annoteInPlot' m = State $ \s -> let l = _annote s
+annoteInPlot' m = state $ \s -> let l = _annote s
                                     (a,annote) = runState m l
                                 in (a,s { _annote = annote})
 
diff --git a/plot.cabal b/plot.cabal
--- a/plot.cabal
+++ b/plot.cabal
@@ -1,5 +1,5 @@
 Name:                plot
-Version:             0.1.2.3
+Version:             0.1.2.4
 License:             BSD3
 License-file:        LICENSE
 Copyright:           (c) A.V.H. McPhail 2010
@@ -48,7 +48,7 @@
      .
 Category:            Graphics
 
-Tested-with:         GHC==6.12.1
+Tested-with:         GHC==7.0.1
 Cabal-version:       >= 1.8
 Build-type:          Simple
 
@@ -59,9 +59,9 @@
 library
 
   Build-Depends:     base >= 4 && < 5,
-                     mtl, array,
+                     mtl > 2, array,
                      MaybeT,
-                     pango >= 0.11.2 && < 0.12, cairo >= 0.11.1 && < 0.12,
+                     pango >= 0.11.2 && < 0.13, cairo >= 0.11.1 && < 0.13,
                      colour >= 2.2.1 && < 2.4,
                      hmatrix >= 0.10