diff --git a/tests/test_subpackage.py b/tests/test_subpackage.py
new file mode 100644
index 0000000..9fefa38
--- /dev/null
+++ b/tests/test_subpackage.py
@@ -0,0 +1,42 @@
+import subprocess
+
+import conftest
+
+from nix_update.options import Options
+from nix_update.update import update
+
+
+def test_update(helpers: conftest.Helpers) -> None:
+    with helpers.testpkgs() as path:
+        opts = Options(
+            attribute="subpackage", subpackages=["autobrr-web"], import_path=str(path)
+        )
+        update(opts)
+
+        def get_attr(attr: str) -> str:
+            return subprocess.run(
+                [
+                    "nix",
+                    "eval",
+                    "--raw",
+                    "--extra-experimental-features",
+                    "nix-command",
+                    "-f",
+                    path,
+                    attr,
+                ],
+                text=True,
+                stdout=subprocess.PIPE,
+            ).stdout.strip()
+
+        subpackage_hash = get_attr("subpackage.autobrr-web.pnpmDeps.outputHash")
+        assert subpackage_hash != "sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA="
+
+        src_hash = get_attr("subpackage.src.outputHash")
+        assert src_hash != "sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA="
+
+        gomodules_hash = get_attr("subpackage.goModules.outputHash")
+        assert gomodules_hash != "sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA="
+
+        version = get_attr("subpackage.version")
+        assert tuple(map(int, version.split("."))) >= (1, 53, 0)
diff --git a/tests/testpkgs/default.nix b/tests/testpkgs/default.nix
index 96dd0e5..b5a4154 100644
--- a/tests/testpkgs/default.nix
+++ b/tests/testpkgs/default.nix
@@ -32,4 +32,5 @@
   mix = pkgs.callPackage ./mix.nix { };
   set = pkgs.callPackage ./set.nix { };
   let-bound-version = pkgs.callPackage ./let-bound-version.nix { };
+  subpackage = pkgs.callPackage ./subpackage.nix { };
 }
diff --git a/tests/testpkgs/subpackage.nix b/tests/testpkgs/subpackage.nix
new file mode 100644
index 0000000..774981c
--- /dev/null
+++ b/tests/testpkgs/subpackage.nix
@@ -0,0 +1,64 @@
+{
+  buildGoModule,
+  fetchFromGitHub,
+  stdenvNoCC,
+  nodejs,
+  pnpm_9,
+  typescript,
+}:
+
+let
+  pname = "autobrr";
+  version = "1.53.0";
+  src = fetchFromGitHub {
+    owner = "autobrr";
+    repo = "autobrr";
+    rev = "v${version}";
+    hash = "sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=";
+  };
+
+  autobrr-web = stdenvNoCC.mkDerivation {
+    pname = "${pname}-web";
+    inherit src version;
+
+    nativeBuildInputs = [
+      nodejs
+      pnpm_9.configHook
+      typescript
+    ];
+
+    sourceRoot = "${src.name}/web";
+
+    pnpmDeps = pnpm_9.fetchDeps {
+      inherit (autobrr-web)
+        pname
+        version
+        src
+        sourceRoot
+        ;
+      hash = "sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=";
+    };
+
+    postBuild = ''
+      pnpm run build
+    '';
+
+    installPhase = ''
+      cp -r dist $out
+    '';
+  };
+in
+buildGoModule rec {
+  inherit
+    autobrr-web
+    pname
+    version
+    src
+    ;
+
+  vendorHash = "sha256-AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=";
+
+  preBuild = ''
+    cp -r ${autobrr-web}/* web/dist
+  '';
+}