diff --git a/pkgs/applications/radio/flex-ncat/default.nix b/pkgs/applications/radio/flex-ncat/default.nix
index 5425c6b73ac8..96912b95d183 100644
--- a/pkgs/applications/radio/flex-ncat/default.nix
+++ b/pkgs/applications/radio/flex-ncat/default.nix
@@ -2,16 +2,16 @@
 
 buildGoModule rec {
   pname = "flex-ncat";
-  version = "0.2-20230126.0";
+  version = "0.4-20231210.1";
 
   src = fetchFromGitHub {
     owner = "kc2g-flex-tools";
     repo = "nCAT";
     rev = "v${version}";
-    hash = "sha256-2taQQVTgAFyqtS06zZ+4Qmr/JIqU6mxNQYvxt+L/Mtc=";
+    hash = "sha256-oC7TPq+Xsl960B7qJP81cWF+GGc28Miv4L8+1vWo7jA=";
   };
 
-  vendorHash = "sha256-Tv6sbfWNOHYwA7v1SpNeM9aHs+3DSFv4V4qxllxrzJc=";
+  vendorHash = "sha256-1i9v8Ej7TMIO+aMYFPFxdfD4b5j84/zkegaYb67WokU=";
 
   meta = with lib; {
     homepage = "https://github.com/kc2g-flex-tools/nCAT";