diff --git a/colour-space.cabal b/colour-space.cabal
--- a/colour-space.cabal
+++ b/colour-space.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                colour-space
-version:             0.1.3.0
+version:             0.1.4.0
 synopsis:            Instances of the manifold-classes for colour types
 -- description:         
 homepage:            https://github.com/leftaroundabout/colour-space
@@ -21,7 +21,7 @@
   -- other-modules:       
   -- other-extensions:    
   build-depends:       base >=4.7 && <5
-                     , manifolds >=0.4.1 && <0.5
+                     , manifolds >=0.4.3 && <0.5
                      , constrained-categories
                      , linearmap-category
                      , linear