diff --git a/docs/disko-install.md b/docs/disko-install.md
index f7bfeaf..7abaff9 100644
--- a/docs/disko-install.md
+++ b/docs/disko-install.md
@@ -204,6 +204,11 @@ let
     self.nixosConfigurations.your-machine.config.system.build.diskoScript
     self.nixosConfigurations.your-machine.config.system.build.diskoScript.drvPath
     self.nixosConfigurations.your-machine.pkgs.stdenv.drvPath
+
+    # https://github.com/NixOS/nixpkgs/blob/f2fd33a198a58c4f3d53213f01432e4d88474956/nixos/modules/system/activation/top-level.nix#L342
+    self.nixosConfigurations.your-machine.pkgs.perlPackages.ConfigIniFiles
+    self.nixosConfigurations.your-machine.pkgs.perlPackages.FileSlurp
+
     (self.nixosConfigurations.your-machine.pkgs.closureInfo { rootPaths = [ ]; }).drvPath
   ] ++ builtins.map (i: i.outPath) (builtins.attrValues self.inputs);
 
diff --git a/tests/disko-install/default.nix b/tests/disko-install/default.nix
index e9a2ed4..8ed04ec 100644
--- a/tests/disko-install/default.nix
+++ b/tests/disko-install/default.nix
@@ -5,6 +5,11 @@ let
   dependencies = [
     self.nixosConfigurations.testmachine.pkgs.stdenv.drvPath
     (self.nixosConfigurations.testmachine.pkgs.closureInfo { rootPaths = [ ]; }).drvPath
+
+    # https://github.com/NixOS/nixpkgs/blob/f2fd33a198a58c4f3d53213f01432e4d88474956/nixos/modules/system/activation/top-level.nix#L342
+    self.nixosConfigurations.your-machine.pkgs.perlPackages.ConfigIniFiles
+    self.nixosConfigurations.your-machine.pkgs.perlPackages.FileSlurp
+
     self.nixosConfigurations.testmachine.config.system.build.toplevel
     self.nixosConfigurations.testmachine.config.system.build.diskoScript
   ] ++ builtins.map (i: i.outPath) (builtins.attrValues self.inputs);