diff --git a/pkgs/development/python-modules/unifi-discovery/default.nix b/pkgs/development/python-modules/unifi-discovery/default.nix
index a508f25d1b33..693155141219 100644
--- a/pkgs/development/python-modules/unifi-discovery/default.nix
+++ b/pkgs/development/python-modules/unifi-discovery/default.nix
@@ -11,16 +11,16 @@
   pytestCheckHook,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "unifi-discovery";
-  version = "1.3.0";
+  version = "1.4.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "bdraco";
     repo = "unifi-discovery";
-    tag = "v${version}";
-    hash = "sha256-/SsgBiCEfMYi3DccYKBZGoYX4egGW+bBIA/D73FaneE=";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-pn8WRsYGbBy4EwQ1DufY2WbbVM65dM4h8ZReG+qkr6k=";
   };
 
   build-system = [ poetry-core ];
@@ -44,9 +44,9 @@ buildPythonPackage rec {
   meta = {
     description = "Module to discover Unifi devices";
     homepage = "https://github.com/bdraco/unifi-discovery";
-    changelog = "https://github.com/bdraco/unifi-discovery/releases/tag/v${version}";
-    license = with lib.licenses; [ asl20 ];
+    changelog = "https://github.com/bdraco/unifi-discovery/releases/tag/${finalAttrs.src.tag}";
+    license = lib.licenses.asl20;
     maintainers = with lib.maintainers; [ fab ];
     platforms = lib.platforms.linux;
   };
-}
+})