diff --git a/pkgs/tools/networking/opensnitch/ui.nix b/pkgs/tools/networking/opensnitch/ui.nix
index 8c0b7686d8a7..79a8af4ee0ff 100644
--- a/pkgs/tools/networking/opensnitch/ui.nix
+++ b/pkgs/tools/networking/opensnitch/ui.nix
@@ -27,7 +27,7 @@ python3Packages.buildPythonApplication rec {
     unicode-slugify
     pyinotify
     notify2
-    # pyasn # dpendency missing but not mandatory
+    pyasn
   ];
 
   preBuild = ''