diff --git a/pkgs/development/libraries/haskell/mime-mail/default.nix b/pkgs/development/libraries/haskell/mime-mail/default.nix
index 691029ac5de2..4f7353dfdb6f 100644
--- a/pkgs/development/libraries/haskell/mime-mail/default.nix
+++ b/pkgs/development/libraries/haskell/mime-mail/default.nix
@@ -4,8 +4,8 @@
 
 cabal.mkDerivation (self: {
   pname = "mime-mail";
-  version = "0.4.2.1";
-  sha256 = "1rpxx90k4dgz1b5ss6vqqgd9n1hjrv09q20myy16zzlj1gmn8k3g";
+  version = "0.4.3";
+  sha256 = "0xh6j4vdg2ispr9f41s8pvx5rb08zqapkqxyvykvjg2ibmczzg4f";
   buildDepends = [
     base64Bytestring blazeBuilder filepath random text
   ];