diff --git a/pkgs/development/libraries/haskell/simple-sendfile/default.nix b/pkgs/development/libraries/haskell/simple-sendfile/default.nix
index b8c527daf1a..806feee295f 100644
--- a/pkgs/development/libraries/haskell/simple-sendfile/default.nix
+++ b/pkgs/development/libraries/haskell/simple-sendfile/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "simple-sendfile";
-  version = "0.2.12";
-  sha256 = "019n82700fbhsqxgn1cwfqii27r436gljis7yl02zjnzy7xlvrha";
+  version = "0.2.13";
+  sha256 = "03cgbzfhkih1ln1xb78r1hfh6zzjjj6763n9nzr9cj6bxs0fiqd3";
   buildDepends = [ network ];
   testDepends = [ conduit hspec HUnit network networkConduit ];
   doCheck = false;