diff --git a/pkgs/development/libraries/haskell/vector-space/default.nix b/pkgs/development/libraries/haskell/vector-space/default.nix
index 1cdb91761f4..3cc44a018f0 100644
--- a/pkgs/development/libraries/haskell/vector-space/default.nix
+++ b/pkgs/development/libraries/haskell/vector-space/default.nix
@@ -1,13 +1,13 @@
-{ cabal, Boolean, MemoTrie }:
+{ cabal, Boolean, MemoTrie, NumInstances }:
 
 cabal.mkDerivation (self: {
   pname = "vector-space";
-  version = "0.7.6";
-  sha256 = "166493dnlgrm9bsyp8dvdnkz1s5503casamihs4d3rij4fqvw7vf";
-  buildDepends = [ Boolean MemoTrie ];
+  version = "0.7.8";
+  sha256 = "195g9zsb73w4a0fcfz0kank6gyqajww0qiqivr4fy0bik2nsr6ry";
+  buildDepends = [ Boolean MemoTrie NumInstances ];
   meta = {
     homepage = "http://haskell.org/haskellwiki/vector-space";
-    description = "Vector & affine spaces, linear maps, and derivatives (requires ghc 6.9 or better)";
+    description = "Vector & affine spaces, linear maps, and derivatives";
     license = self.stdenv.lib.licenses.bsd3;
     platforms = self.ghc.meta.platforms;
     maintainers = [