diff --git a/pkgs/tools/misc/grex/default.nix b/pkgs/tools/misc/grex/default.nix
index 4b9f3c03bf5..2a6ca6031e3 100644
--- a/pkgs/tools/misc/grex/default.nix
+++ b/pkgs/tools/misc/grex/default.nix
@@ -6,16 +6,16 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "grex";
-  version = "1.4.2";
+  version = "1.4.4";
 
   src = fetchFromGitHub {
     owner = "pemistahl";
-    repo = pname;
+    repo = "grex";
     rev = "v${version}";
-    sha256 = "sha256-kbrBnpoVeXSgmIqElpfAnoSutYwsnFaxFJpRsJPUE8k=";
+    hash = "sha256-ef1eUxeCznIgXLoywwJmnLkTGdW1AmGwCin9DLU9kAs=";
   };
 
-  cargoSha256 = "sha256-WO8h5JUEiCpfsROQoRZj7I6em6REcJ2PfmoGN1zKRPg=";
+  cargoHash = "sha256-XLH+fS3fwRcWmVOzTjUacV010N37Oofs9Tbixdka1qY=";
 
   buildInputs = lib.optionals stdenv.isDarwin [ Security ];
 
@@ -27,7 +27,9 @@ rustPlatform.buildRustPackage rec {
   meta = with lib; {
     description = "A command-line tool for generating regular expressions from user-provided test cases";
     homepage = "https://github.com/pemistahl/grex";
+    changelog = "https://github.com/pemistahl/grex/releases/tag/v${version}";
     license = licenses.asl20;
+    mainProgram = "grex";
     maintainers = with maintainers; [ SuperSandro2000 mfrw ];
   };
 }