diff --git a/music-graphics.cabal b/music-graphics.cabal
--- a/music-graphics.cabal
+++ b/music-graphics.cabal
@@ -1,6 +1,6 @@
 
 name:                   music-graphics
-version:                1.7.2
+version:                1.8
 author:                 Hans Hoglund
 maintainer:             Hans Hoglund <hans@hanshoglund.se>
 license:                BSD3
@@ -22,14 +22,14 @@
     build-depends:
                         base                    >= 4 && < 5,
                         aeson                   >= 0.7.0.6 && < 1,
-                        lens				            >= 4.3.3 && < 4.4,
+                        lens                    >= 4.6 && < 4.7,
                         -- diagrams-svg            >= 1.1 && < 2,
                         bytestring,
                         blaze-svg,
                         process                 >= 1.2 && < 1.3,
-                        music-preludes          == 1.7.2,
-                        music-score             == 1.7.2,
-                        music-pitch             == 1.7.2
+                        music-preludes          == 1.8,
+                        music-score             == 1.8,
+                        music-pitch             == 1.8
     exposed-modules:    Music.Graphics
                         Music.Graphics.Diagrams
     hs-source-dirs:     src
