diff --git a/.changeset/nextjs-manifest-fingerprint.md b/.changeset/nextjs-manifest-fingerprint.md
new file mode 100644
index 000000000..c470775b8
--- /dev/null
+++ b/.changeset/nextjs-manifest-fingerprint.md
@@ -0,0 +1,5 @@
+---
+"oxlint-plugin-react-doctor": patch
+---
+
+Cache Next.js async dynamic API diagnostics against the owning package manifest.
diff --git a/packages/oxlint-plugin-react-doctor/src/plugin/cross-file-dependencies.test.ts b/packages/oxlint-plugin-react-doctor/src/plugin/cross-file-dependencies.test.ts
index 15623b409..9f8fcbf51 100644
--- a/packages/oxlint-plugin-react-doctor/src/plugin/cross-file-dependencies.test.ts
+++ b/packages/oxlint-plugin-react-doctor/src/plugin/cross-file-dependencies.test.ts
@@ -326,6 +326,30 @@ describe("forwarded Hook dependency collectors", () => {
 });
 
 describe("nextjs collectors", () => {
+  it("records the owning package manifest for the async dynamic API wrapper gate", () => {
+    writeFixtureFile(
+      "package.json",
+      `{ "dependencies": { "next": "^15.0.0", "react": "^19.0.0" } }\n`,
+    );
+    const pagePath = writeFixtureFile(
+      "app/page.tsx",
+      `import { cookies } from "next/headers";
+export default function Page() {
+  return cookies().get("session");
+}
+`,
+    );
+
+    for (const trace of [
+      collectFor(pagePath, ["nextjs-async-dynamic-api-not-awaited"]),
+      collectFor(pagePath, ["nextjs-async-dynamic-api-not-awaited"]),
+    ]) {
+      expect(trace).not.toBeNull();
+      expect(trace?.contentPaths.has(fixturePath("package.json"))).toBe(true);
+      expect(trace?.existencePaths.has(fixturePath("app/package.json"))).toBe(true);
+    }
+  });
+
   it("records ancestor layout probes for a page file only", () => {
     writeFixtureFile("app/layout.tsx", "export default ({ children }) => children;\n");
     const pagePath = writeFixtureFile("app/products/page.tsx", "export default () => <div />;\n");
diff --git a/packages/oxlint-plugin-react-doctor/src/plugin/cross-file-dependencies.ts b/packages/oxlint-plugin-react-doctor/src/plugin/cross-file-dependencies.ts
index bb8861002..467e52547 100644
--- a/packages/oxlint-plugin-react-doctor/src/plugin/cross-file-dependencies.ts
+++ b/packages/oxlint-plugin-react-doctor/src/plugin/cross-file-dependencies.ts
@@ -427,6 +427,7 @@ export const CROSS_FILE_DEPENDENCY_COLLECTORS: ReadonlyMap<string, CrossFileDepe
     ["client-passive-event-listeners", collectEffectValueHelperDependencies],
     ["exhaustive-deps", collectForwardedHookDependencies],
     ["no-barrel-import", collectNoBarrelImportDependencies],
+    ["nextjs-async-dynamic-api-not-awaited", collectNearestManifestDependencies],
     ["nextjs-missing-metadata", collectNextjsMissingMetadataDependencies],
     ["nextjs-no-use-search-params-without-suspense", collectNextjsSearchParamsDependencies],
     ["no-dynamic-import-path", collectNearestManifestDependencies],
@@ -466,7 +467,6 @@ export const CROSS_FILE_DEPENDENCY_COLLECTORS: ReadonlyMap<string, CrossFileDepe
  * partition), forcing a conscious classification.
  */
 export const UNBOUNDED_CROSS_FILE_RULE_IDS: ReadonlySet<string> = new Set([
-  "nextjs-async-dynamic-api-not-awaited",
   "nextjs-no-img-element",
   "no-loading-flag-reset-outside-finally",
   "only-export-components",