diff --git a/pkgs/development/libraries/haskell/colour/default.nix b/pkgs/development/libraries/haskell/colour/default.nix
index 51c93043e8b..d31f8546d4c 100644
--- a/pkgs/development/libraries/haskell/colour/default.nix
+++ b/pkgs/development/libraries/haskell/colour/default.nix
@@ -2,12 +2,12 @@
 
 cabal.mkDerivation (self: {
   pname = "colour";
-  version = "2.3.1";
-  sha256 = "58cf12b8abf7d01a752b1b778b64cc406903874702e3475d65c2aa35689fa49b";
+  version = "2.3.2";
+  sha256 = "1j0y8cfdzhzjid1hg50qvh5nsa6kfnxcwxaizxyk73z60dn8g9b6";
   meta = {
     homepage = "http://www.haskell.org/haskellwiki/Colour";
     description = "A model for human colour/color perception";
-    license = "unknown";
+    license = self.stdenv.lib.licenses.mit;
     platforms = self.ghc.meta.platforms;
     maintainers = [
       self.stdenv.lib.maintainers.andres