diff --git a/README.md b/README.md
index f8e474d..8651e2a 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ See ["Caching dependencies to speed up workflows"](https://docs.github.com/en/ac
 ### ⚠️ Important changes
 
 > [!IMPORTANT]
-> `actions/cache@v6` runs on the Node.js 24 runtime and requires a minimum Actions Runner version of `2.327.1`.
+> `actions/cache@v5` runs on the Node.js 24 runtime and requires a minimum Actions Runner version of `2.327.1`.
 > If you are using self-hosted runners, ensure they are updated before upgrading.
 
 The cache backend service has been rewritten from the ground up for improved performance and reliability. [actions/cache](https://github.com/actions/cache) now integrates with the new cache service (v2) APIs.
diff --git a/__tests__/actionUtils.test.ts b/__tests__/actionUtils.test.ts
index d4eb482..304952f 100644
--- a/__tests__/actionUtils.test.ts
+++ b/__tests__/actionUtils.test.ts
@@ -50,7 +50,7 @@ let pristineEnv: NodeJS.ProcessEnv;
 beforeEach(() => {
     pristineEnv = { ...process.env };
     jest.clearAllMocks();
-    (core.getInput as jest.Mock).mockImplementation(
+    jest.mocked(core.getInput).mockImplementation(
         (name: string, options?: { required?: boolean }) => {
             const val =
                 process.env[`INPUT_${name.replace(/ /g, "_").toUpperCase()}`] ||
@@ -217,12 +217,12 @@ test("getInputAsBool throws if required and value missing", () => {
 });
 
 test("isCacheFeatureAvailable for ac enabled", () => {
-    (cache.isFeatureAvailable as jest.Mock).mockReturnValue(true);
+    jest.mocked(cache.isFeatureAvailable).mockReturnValue(true);
     expect(actionUtils.isCacheFeatureAvailable()).toBe(true);
 });
 
 test("isCacheFeatureAvailable for ac disabled on GHES", () => {
-    (cache.isFeatureAvailable as jest.Mock).mockReturnValue(false);
+    jest.mocked(cache.isFeatureAvailable).mockReturnValue(false);
 
     const message = `Cache action is only supported on GHES version >= 3.5. If you are on version >=3.5 Please check with GHES admin if Actions cache service is enabled or not.
 Otherwise please upgrade to GHES version >= 3.5 and If you are also using Github Connect, please unretire the actions/cache namespace before upgrade (see https://docs.github.com/en/enterprise-server@3.5/admin/github-actions/managing-access-to-actions-from-githubcom/enabling-automatic-access-to-githubcom-actions-using-github-connect#automatic-retirement-of-namespaces-for-actions-accessed-on-githubcom)`;
@@ -237,7 +237,7 @@ Otherwise please upgrade to GHES version >= 3.5 and If you are also using Github
 });
 
 test("isCacheFeatureAvailable for ac disabled on dotcom", () => {
-    (cache.isFeatureAvailable as jest.Mock).mockReturnValue(false);
+    jest.mocked(cache.isFeatureAvailable).mockReturnValue(false);
 
     const message =
         "An internal error has occurred in cache backend. Please check https://www.githubstatus.com/ for any ongoing issue in actions.";
diff --git a/__tests__/restoreImpl.test.ts b/__tests__/restoreImpl.test.ts
index f8c6fac..6e35d22 100644
--- a/__tests__/restoreImpl.test.ts
+++ b/__tests__/restoreImpl.test.ts
@@ -48,7 +48,7 @@ const testUtils = await import("../src/utils/testUtils");
 
 beforeEach(() => {
     jest.clearAllMocks();
-    (core.getInput as jest.Mock).mockImplementation(
+    jest.mocked(core.getInput).mockImplementation(
         (name: string, options?: { required?: boolean }) => {
             const val =
                 process.env[`INPUT_${name.replace(/ /g, "_").toUpperCase()}`] ||
@@ -59,8 +59,8 @@ beforeEach(() => {
             return val.trim();
         }
     );
-    (core.getState as jest.Mock).mockReturnValue("");
-    (cache.isFeatureAvailable as jest.Mock).mockReturnValue(true);
+    jest.mocked(core.getState).mockReturnValue("");
+    jest.mocked(cache.isFeatureAvailable).mockReturnValue(true);
     process.env[Events.Key] = Events.Push;
     process.env[RefKey] = "refs/heads/feature-branch";
 });
@@ -83,7 +83,7 @@ test("restore with invalid event outputs warning", async () => {
 });
 
 test("restore without AC available should no-op", async () => {
-    (cache.isFeatureAvailable as jest.Mock).mockReturnValue(false);
+    jest.mocked(cache.isFeatureAvailable).mockReturnValue(false);
 
     await restoreImpl(new StateProvider());
 
@@ -93,13 +93,21 @@ test("restore without AC available should no-op", async () => {
 });
 
 test("restore on GHES without AC available should no-op", async () => {
-    (cache.isFeatureAvailable as jest.Mock).mockReturnValue(false);
+    process.env["GITHUB_SERVER_URL"] = "https://my-ghes-server.com";
+    jest.mocked(cache.isFeatureAvailable).mockReturnValue(false);
 
     await restoreImpl(new StateProvider());
 
     expect(cache.restoreCache).toHaveBeenCalledTimes(0);
     expect(core.setOutput).toHaveBeenCalledTimes(1);
     expect(core.setOutput).toHaveBeenCalledWith("cache-hit", "false");
+    expect(core.info).toHaveBeenCalledWith(
+        expect.stringContaining(
+            "Cache action is only supported on GHES version >= 3.5"
+        )
+    );
+
+    delete process.env["GITHUB_SERVER_URL"];
 });
 
 test("restore on GHES with AC available ", async () => {
@@ -111,7 +119,7 @@ test("restore on GHES with AC available ", async () => {
         enableCrossOsArchive: false
     });
 
-    (cache.restoreCache as jest.Mock).mockResolvedValue(key);
+    jest.mocked(cache.restoreCache).mockResolvedValue(key);
 
     await restoreImpl(new StateProvider());
 
@@ -160,7 +168,7 @@ test("restore with too many keys should fail", async () => {
         restoreKeys,
         enableCrossOsArchive: false
     });
-    (cache.restoreCache as jest.Mock).mockRejectedValue(
+    jest.mocked(cache.restoreCache).mockRejectedValue(
         new Error("Key Validation Error: Keys are limited to a maximum of 10.")
     );
     await restoreImpl(new StateProvider());
@@ -178,7 +186,7 @@ test("restore with large key should fail", async () => {
         key,
         enableCrossOsArchive: false
     });
-    (cache.restoreCache as jest.Mock).mockRejectedValue(
+    jest.mocked(cache.restoreCache).mockRejectedValue(
         new Error(
             `Key Validation Error: ${key} cannot be larger than 512 characters.`
         )
@@ -198,7 +206,7 @@ test("restore with invalid key should fail", async () => {
         key,
         enableCrossOsArchive: false
     });
-    (cache.restoreCache as jest.Mock).mockRejectedValue(
+    jest.mocked(cache.restoreCache).mockRejectedValue(
         new Error(`Key Validation Error: ${key} cannot contain commas.`)
     );
     await restoreImpl(new StateProvider());
@@ -217,7 +225,7 @@ test("restore with no cache found", async () => {
         enableCrossOsArchive: false
     });
 
-    (cache.restoreCache as jest.Mock).mockResolvedValue(undefined);
+    jest.mocked(cache.restoreCache).mockResolvedValue(undefined);
 
     await restoreImpl(new StateProvider());
 
@@ -240,7 +248,7 @@ test("restore with restore keys and no cache found", async () => {
         enableCrossOsArchive: false
     });
 
-    (cache.restoreCache as jest.Mock).mockResolvedValue(undefined);
+    jest.mocked(cache.restoreCache).mockResolvedValue(undefined);
 
     await restoreImpl(new StateProvider());
 
@@ -261,7 +269,7 @@ test("restore with cache found for key", async () => {
         enableCrossOsArchive: false
     });
 
-    (cache.restoreCache as jest.Mock).mockResolvedValue(key);
+    jest.mocked(cache.restoreCache).mockResolvedValue(key);
 
     await restoreImpl(new StateProvider());
 
@@ -284,7 +292,7 @@ test("restore with cache found for restore key", async () => {
         enableCrossOsArchive: false
     });
 
-    (cache.restoreCache as jest.Mock).mockResolvedValue(restoreKey);
+    jest.mocked(cache.restoreCache).mockResolvedValue(restoreKey);
 
     await restoreImpl(new StateProvider());
 
@@ -307,7 +315,7 @@ test("restore with lookup-only set", async () => {
         lookupOnly: true
     });
 
-    (cache.restoreCache as jest.Mock).mockResolvedValue(key);
+    jest.mocked(cache.restoreCache).mockResolvedValue(key);
 
     await restoreImpl(new StateProvider());
 
diff --git a/__tests__/saveImpl.test.ts b/__tests__/saveImpl.test.ts
index c777077..c61b22e 100644
--- a/__tests__/saveImpl.test.ts
+++ b/__tests__/saveImpl.test.ts
@@ -101,11 +101,19 @@ test("save without AC available should no-op", async () => {
 });
 
 test("save on ghes without AC available should no-op", async () => {
+    process.env["GITHUB_SERVER_URL"] = "https://my-ghes-server.com";
     (cache.isFeatureAvailable as jest.Mock).mockReturnValue(false);
 
     await saveImpl(new StateProvider());
 
     expect(cache.saveCache).toHaveBeenCalledTimes(0);
+    expect(core.info).toHaveBeenCalledWith(
+        expect.stringContaining(
+            "Cache action is only supported on GHES version >= 3.5"
+        )
+    );
+
+    delete process.env["GITHUB_SERVER_URL"];
 });
 
 test("save on GHES with AC available", async () => {
@@ -159,8 +167,8 @@ test("save with missing input outputs warning", async () => {
     const savedCacheKey = "Linux-node-";
 
     (core.getState as jest.Mock)
-        .mockReturnValueOnce(savedCacheKey)
-        .mockReturnValueOnce(primaryKey);
+        .mockReturnValueOnce(primaryKey)
+        .mockReturnValueOnce(savedCacheKey);
 
     await saveImpl(new StateProvider());
 
diff --git a/package.json b/package.json
index 88408e2..498ad69 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
   "main": "dist/restore/index.js",
   "scripts": {
     "build": "tsc && ncc build -o dist/restore src/restore.ts && ncc build -o dist/save src/save.ts && ncc build -o dist/restore-only src/restoreOnly.ts && ncc build -o dist/save-only src/saveOnly.ts",
-    "test": "node --experimental-vm-modules node_modules/jest/bin/jest.js --coverage",
+    "test": "tsc --noEmit && node --experimental-vm-modules node_modules/jest/bin/jest.js --coverage",
     "lint": "eslint **/*.ts --cache",
     "format": "prettier --write **/*.ts",
     "format-check": "prettier --check **/*.ts"