diff --git a/pkgs/development/libraries/haskell/cmdargs/default.nix b/pkgs/development/libraries/haskell/cmdargs/default.nix
index b7d3e81160a..64d5622aaf8 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 = "0.1";
-  sha256 = "1ec8a0b49dedc0b159c4e8f6b02ae57ba918b27d8648294998a13e04cf257ebf";
+  version = "0.7";
+  sha256 = "0qijfdc66f0r2k272sl41nxfymmsk7naw5is3b4zyxsgm147c0vq";
   propagatedBuildInputs = [filepath mtl];
   meta = {
     description = "Command line argument processing";