diff --git a/pkgs/tools/security/knockpy/default.nix b/pkgs/tools/security/knockpy/default.nix
index 169165067c93..3f503ec6c44a 100644
--- a/pkgs/tools/security/knockpy/default.nix
+++ b/pkgs/tools/security/knockpy/default.nix
@@ -1,6 +1,7 @@
-{ lib
-, fetchFromGitHub
-, python3
+{
+  lib,
+  fetchFromGitHub,
+  python3,
 }:
 
 python3.pkgs.buildPythonApplication rec {
@@ -19,13 +20,13 @@ python3.pkgs.buildPythonApplication rec {
     "beautifulsoup4"
     "dnspython"
     "pyopenssl"
+    "requests"
     "tqdm"
   ];
 
-  build-system = with python3.pkgs; [
-    pythonRelaxDepsHook
-    setuptools
-  ];
+  build-system = with python3.pkgs; [ setuptools ];
+
+  nativeBuildInputs = with python3.pkgs; [ pythonRelaxDepsHook ];
 
   dependencies = with python3.pkgs; [
     beautifulsoup4
@@ -38,15 +39,13 @@ python3.pkgs.buildPythonApplication rec {
   # Project has no tests
   doCheck = false;
 
-  pythonImportsCheck = [
-    "knock"
-  ];
+  pythonImportsCheck = [ "knock" ];
 
   meta = with lib; {
     description = "Tool to scan subdomains";
     homepage = "https://github.com/guelfoweb/knock";
     changelog = "https://github.com/guelfoweb/knock/releases/tag/${version}";
-    license = with licenses; [ gpl3Only ];
+    license = licenses.gpl3Only;
     maintainers = with maintainers; [ fab ];
     mainProgram = "knockpy";
   };