diff --git a/CHANGES b/CHANGES
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,7 @@
+* 0.3.0.1: 12 February 2014
+
+  - Allow lens-4.0
+
 * 0.3: 1 January 2014
 
   - Use lenses for ForceLayoutOpts
diff --git a/force-layout.cabal b/force-layout.cabal
--- a/force-layout.cabal
+++ b/force-layout.cabal
@@ -1,5 +1,5 @@
 name:                force-layout
-version:             0.3
+version:             0.3.0.1
 synopsis:            Simple force-directed layout
 description:         Simulation engine for doing simple force-based layout,
                      /e.g./ for trees or graphs.  See the diagrams-contrib package
@@ -22,7 +22,7 @@
   build-depends:       base >= 4.2 && < 4.8,
                        vector-space >=0.7 && <0.9,
                        vector-space-points >= 0.1.1 && < 0.2,
-                       lens >= 3 && < 4,
+                       lens >= 3 && < 4.1,
                        containers >=0.4 && < 0.6,
                        data-default-class >= 0.0.1 && < 0.1
   hs-source-dirs:      src