diff --git a/pkgs/development/libraries/haskell/MFlow/default.nix b/pkgs/development/libraries/haskell/MFlow/default.nix
index bfefa0bead26..0c426a3bf4c7 100644
--- a/pkgs/development/libraries/haskell/MFlow/default.nix
+++ b/pkgs/development/libraries/haskell/MFlow/default.nix
@@ -9,8 +9,8 @@
 
 cabal.mkDerivation (self: {
   pname = "MFlow";
-  version = "0.4.5.6";
-  sha256 = "12rgp4x2in3r1hf4j1fr5ih0x0mb54x1rdr1mjllbh8c09ricrah";
+  version = "0.4.5.7";
+  sha256 = "0faw082z8yyzf0k1vrgpqa8kvwb2zwmasy1p1vvj3a7lhhnlr20s";
   buildDepends = [
     blazeHtml blazeMarkup caseInsensitive clientsession conduit
     conduitExtra extensibleExceptions httpTypes monadloc mtl parsec