diff --git a/tests/fail2ban-gitea.nix b/tests/fail2ban-gitea.nix
index d39b9fd..c91ab0f 100644
--- a/tests/fail2ban-gitea.nix
+++ b/tests/fail2ban-gitea.nix
@@ -25,6 +25,10 @@ let
         serviceName: zpool: dirs:
         { ... }:
         { };
+      serviceFilePerms =
+        serviceName: tmpfilesRules:
+        { ... }:
+        { };
     }
   );
 
diff --git a/tests/fail2ban-immich.nix b/tests/fail2ban-immich.nix
index df4b8a5..7f95808 100644
--- a/tests/fail2ban-immich.nix
+++ b/tests/fail2ban-immich.nix
@@ -24,6 +24,10 @@ let
         serviceName: zpool: dirs:
         { ... }:
         { };
+      serviceFilePerms =
+        serviceName: tmpfilesRules:
+        { ... }:
+        { };
     }
   );
 
diff --git a/tests/fail2ban-jellyfin.nix b/tests/fail2ban-jellyfin.nix
index 5d88a7f..82b003b 100644
--- a/tests/fail2ban-jellyfin.nix
+++ b/tests/fail2ban-jellyfin.nix
@@ -26,6 +26,10 @@ let
         serviceName: zpool: dirs:
         { ... }:
         { };
+      serviceFilePerms =
+        serviceName: tmpfilesRules:
+        { ... }:
+        { };
       optimizePackage = pkg: pkg; # No-op for testing
     }
   );
diff --git a/tests/fail2ban-vaultwarden.nix b/tests/fail2ban-vaultwarden.nix
index dcb7749..82036be 100644
--- a/tests/fail2ban-vaultwarden.nix
+++ b/tests/fail2ban-vaultwarden.nix
@@ -24,6 +24,10 @@ let
         serviceName: zpool: dirs:
         { ... }:
         { };
+      serviceFilePerms =
+        serviceName: tmpfilesRules:
+        { ... }:
+        { };
     }
   );