diff --git a/pkgs/development/libraries/haskell/cmdargs/default.nix b/pkgs/development/libraries/haskell/cmdargs/default.nix
index 55c50cb99fb1..87d09a6d5fce 100644
--- a/pkgs/development/libraries/haskell/cmdargs/default.nix
+++ b/pkgs/development/libraries/haskell/cmdargs/default.nix
@@ -2,8 +2,8 @@
 
 cabal.mkDerivation (self: {
   pname = "cmdargs";
-  version = "0.9.5";
-  sha256 = "0ihanswhq5d29d9ll5q4grkbaq64dwfsayws7y4xa387d5s9p3iv";
+  version = "0.9.6";
+  sha256 = "0xmzx7iglygks11qmnwz9jjj0jim2sjq7x3xf39symzs986pswlk";
   isLibrary = true;
   isExecutable = true;
   buildDepends = [ filepath transformers ];