diff --git a/pkgs/development/libraries/haskell/JuicyPixels/default.nix b/pkgs/development/libraries/haskell/JuicyPixels/default.nix
index 2a7bc888c48..4dba89d9925 100644
--- a/pkgs/development/libraries/haskell/JuicyPixels/default.nix
+++ b/pkgs/development/libraries/haskell/JuicyPixels/default.nix
@@ -1,13 +1,13 @@
-{ cabal, binary, deepseq, mmap, mtl, primitive, transformers
-, vector, zlib
+{ cabal, binary, deepseq, mtl, primitive, transformers, vector
+, zlib
 }:
 
 cabal.mkDerivation (self: {
   pname = "JuicyPixels";
-  version = "3.1";
-  sha256 = "1z3adva85qgdyx85hldqi99lnb3pg7a42q44zxil4gxwi62pw4xr";
+  version = "3.1.1";
+  sha256 = "0bprga2lh7bjlmfm4p6vyzhjrhqw9ix0wnzc6f1q4a7skwhq0z92";
   buildDepends = [
-    binary deepseq mmap mtl primitive transformers vector zlib
+    binary deepseq mtl primitive transformers vector zlib
   ];
   meta = {
     homepage = "https://github.com/Twinside/Juicy.Pixels";