diff --git a/studio/backend/tests/test_llama_cpp_update.py b/studio/backend/tests/test_llama_cpp_update.py
index 1db05b2b42..522466a9f4 100644
--- a/studio/backend/tests/test_llama_cpp_update.py
+++ b/studio/backend/tests/test_llama_cpp_update.py
@@ -329,7 +329,9 @@ def test_status_lemonade_marker_compares_against_fork(monkeypatch, tmp_path):
         source = "lemonade",
     )
     monkeypatch.setattr(upd, "_find_binary", lambda: binary)
-    monkeypatch.setattr(freshness, "_fetch_latest_release_tag", lambda repo, timeout = 5.0: "b9632-mix-2d6bd50")
+    monkeypatch.setattr(
+        freshness, "_fetch_latest_release_tag", lambda repo, timeout = 5.0: "b9632-mix-2d6bd50"
+    )
     st = upd.get_update_status(force_refresh = True)
     assert st["update_available"] is True
     assert st["published_repo"] == "unslothai/llama.cpp"  # not the recorded ggml-org
@@ -349,7 +351,9 @@ def test_start_update_lemonade_marker_targets_fork(monkeypatch, tmp_path):
     )
     monkeypatch.setattr(upd, "_find_binary", lambda: binary)
     monkeypatch.setattr(upd, "_installer_script", lambda: tmp_path / "install_llama_prebuilt.py")
-    monkeypatch.setattr(freshness, "_fetch_latest_release_tag", lambda repo, timeout = 5.0: "b9632-mix-2d6bd50")
+    monkeypatch.setattr(
+        freshness, "_fetch_latest_release_tag", lambda repo, timeout = 5.0: "b9632-mix-2d6bd50"
+    )
     captured = {}
     _patch_installer_popen(monkeypatch, on_start = lambda cmd: captured.update(cmd = cmd))
     res = upd.start_update()
diff --git a/studio/install_llama_prebuilt.py b/studio/install_llama_prebuilt.py
index a5020e7740..dc2de31773 100644
--- a/studio/install_llama_prebuilt.py
+++ b/studio/install_llama_prebuilt.py
@@ -1612,7 +1612,10 @@ def _lemonade_release_api_for(llama_tag: str) -> str:
 
 
 def resolve_lemonade_rocm_choice(
-    host: HostInfo, os_prefix: str, install_kind: str, llama_tag: str = "latest"
+    host: HostInfo,
+    os_prefix: str,
+    install_kind: str,
+    llama_tag: str = "latest",
 ) -> AssetChoice | None:
     """Lemonade ROCm bundle for a data-center AMD GPU (gfx908/gfx90a) the fork
     does not ship. None for any other arch or on a fetch/asset/host miss.
@@ -1652,9 +1655,7 @@ def resolve_lemonade_rocm_choice(
     )
 
 
-def _lemonade_release_plans(
-    llama_tag: str, host: HostInfo
-) -> tuple[str, list[InstallReleasePlan]]:
+def _lemonade_release_plans(llama_tag: str, host: HostInfo) -> tuple[str, list[InstallReleasePlan]]:
     """Single-attempt plan for a data-center AMD GPU, sourced from lemonade.
     release_tag is lemonade's own counter so updates compare against lemonade;
     llama_tag is a real upstream tag because the source tree is hydrated from
diff --git a/tests/studio/install/test_rocm_support.py b/tests/studio/install/test_rocm_support.py
index cb51e4520d..66d8261941 100644
--- a/tests/studio/install/test_rocm_support.py
+++ b/tests/studio/install/test_rocm_support.py
@@ -390,17 +390,23 @@ class TestDataCenterLemonadeRouting:
         assert prebuilt_mod.resolve_lemonade_rocm_choice(host, "ubuntu", "linux-rocm") is None
         sentinel = ("forkpath", [])
         monkeypatch.setattr(prebuilt_mod, "_fork_manifest_release_plans", lambda *a, **k: sentinel)
-        assert prebuilt_mod.resolve_simple_install_release_plans(
-            "latest", host, prebuilt_mod.DEFAULT_PUBLISHED_REPO, ""
-        ) == sentinel
+        assert (
+            prebuilt_mod.resolve_simple_install_release_plans(
+                "latest", host, prebuilt_mod.DEFAULT_PUBLISHED_REPO, ""
+            )
+            == sentinel
+        )
 
     def test_nvidia_with_stray_gfx_not_routed_to_lemonade(self, monkeypatch):
         host = nvidia_host(has_rocm = True, rocm_gfx_target = "gfx908")
         sentinel = ("forkpath", [])
         monkeypatch.setattr(prebuilt_mod, "_fork_manifest_release_plans", lambda *a, **k: sentinel)
-        assert prebuilt_mod.resolve_simple_install_release_plans(
-            "latest", host, prebuilt_mod.DEFAULT_PUBLISHED_REPO, ""
-        ) == sentinel
+        assert (
+            prebuilt_mod.resolve_simple_install_release_plans(
+                "latest", host, prebuilt_mod.DEFAULT_PUBLISHED_REPO, ""
+            )
+            == sentinel
+        )
 
     @patch.object(prebuilt_mod, "fetch_json")
     def test_untrusted_asset_url_skipped(self, mock_fetch):