diff --git a/pkgs/tools/misc/youtube-dl/default.nix b/pkgs/tools/misc/youtube-dl/default.nix
index 77a6eceb8a2f..5f2becdadaff 100644
--- a/pkgs/tools/misc/youtube-dl/default.nix
+++ b/pkgs/tools/misc/youtube-dl/default.nix
@@ -92,5 +92,8 @@ buildPythonPackage rec {
     maintainers = with maintainers; [ bluescreen303 fpletz ];
     platforms = with platforms; linux ++ darwin;
     mainProgram = "youtube-dl";
+    knownVulnerabilities = [
+      "youtube-dl is unmaintained, migrate to yt-dlp, if possible"
+    ];
   };
 }