diff --git a/pkgs/development/libraries/haskell/shelly/default.nix b/pkgs/development/libraries/haskell/shelly/default.nix
index 2d2b3ca495d..867632cb818 100644
--- a/pkgs/development/libraries/haskell/shelly/default.nix
+++ b/pkgs/development/libraries/haskell/shelly/default.nix
@@ -3,8 +3,8 @@
 
 cabal.mkDerivation (self: {
   pname = "shelly";
-  version = "0.13.0.1";
-  sha256 = "1iw2hbnr9pwfvz6hhmnmg4h2h58ggppbjy3vs0i08hc33nms1lvy";
+  version = "0.13.4";
+  sha256 = "0776vlvzkx5dbkb8gyvcngq2ryabcx1ib4hw2cb6f8bm77y20sq1";
   buildDepends = [
     mtl systemFileio systemFilepath text time unixCompat
   ];