diff --git a/pkgs/development/python-modules/notus-scanner/default.nix b/pkgs/development/python-modules/notus-scanner/default.nix
index 263aebada6a5..51a41bedc920 100644
--- a/pkgs/development/python-modules/notus-scanner/default.nix
+++ b/pkgs/development/python-modules/notus-scanner/default.nix
@@ -27,6 +27,7 @@ buildPythonPackage rec {
   };
 
   pythonRelaxDeps = [
+    "packaging"
     "python-gnupg"
   ];