diff --git a/pkgs/tools/security/credslayer/default.nix b/pkgs/tools/security/credslayer/default.nix
index c8e403f3b9e..7d9d6757793 100644
--- a/pkgs/tools/security/credslayer/default.nix
+++ b/pkgs/tools/security/credslayer/default.nix
@@ -21,8 +21,9 @@ python3.pkgs.buildPythonApplication rec {
   ];
 
   nativeCheckInputs = with python3.pkgs; [
-    wireshark-cli
+    py
     pytestCheckHook
+    wireshark-cli
   ];
 
   pytestFlagsArray = [