diff --git a/pkgs/development/libraries/haskell/bmp/1.2.3.4.nix b/pkgs/development/libraries/haskell/bmp/1.2.4.1.nix
similarity index 81%
rename from pkgs/development/libraries/haskell/bmp/1.2.3.4.nix
rename to pkgs/development/libraries/haskell/bmp/1.2.4.1.nix
index 404229cf763..a3de1d11830 100644
--- a/pkgs/development/libraries/haskell/bmp/1.2.3.4.nix
+++ b/pkgs/development/libraries/haskell/bmp/1.2.4.1.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "bmp";
-  version = "1.2.3.4";
-  sha256 = "134nfchsw4q1k3kr09i5w8jxbr659as4523gs5m2dch15wrmrhf6";
+  version = "1.2.4.1";
+  sha256 = "1ipy8v5n5dmajnai2cf7591chklxcbhpvwjdgvdwglipds2hjpap";
   buildDepends = [ binary ];
   meta = {
     homepage = "http://code.ouroborus.net/bmp";
diff --git a/pkgs/top-level/haskell-packages.nix b/pkgs/top-level/haskell-packages.nix
index 6d877b866dc..077583399be 100644
--- a/pkgs/top-level/haskell-packages.nix
+++ b/pkgs/top-level/haskell-packages.nix
@@ -525,7 +525,7 @@ let result = let callPackage = x : y : modifyPrio (newScope result.final x y);
   bloomfilter = callPackage ../development/libraries/haskell/bloomfilter {};
 
   bmp_1_2_2_1 = callPackage ../development/libraries/haskell/bmp/1.2.2.1.nix {};
-  bmp_1_2_3_4 = callPackage ../development/libraries/haskell/bmp/1.2.3.4.nix {};
+  bmp_1_2_4_1 = callPackage ../development/libraries/haskell/bmp/1.2.4.1.nix {};
   bmp = self.bmp_1_2_2_1;       # later versions work only with ghc 7.6 and beyond
 
   Boolean = callPackage ../development/libraries/haskell/Boolean {};