diff --git a/test/defaults.test.ts b/test/defaults.test.ts
index 8b7d2feae..1130db90c 100644
--- a/test/defaults.test.ts
+++ b/test/defaults.test.ts
@@ -48,8 +48,7 @@ describe("endpoint.defaults()", () => {
         [],
         {
           headers: {
-            accept:
-              "application/vnd.github.foo-preview.raw+json,application/vnd.github.bar-preview.raw+json",
+            accept: "application/vnd.github.v3.raw+json",
             authorization: "token 0000000000000000000000000000000000000001",
             "user-agent": "myApp/1.2.3",
           },
@@ -63,7 +62,6 @@ describe("endpoint.defaults()", () => {
       },
       mediaType: {
         format: "raw+json",
-        previews: ["foo", "bar"],
       },
       org: "my-project",
       request: {
diff --git a/test/request.test.ts b/test/request.test.ts
index 2f91a9021..12c3119fd 100644
--- a/test/request.test.ts
+++ b/test/request.test.ts
@@ -118,7 +118,7 @@ x//0u+zd/R/QRUzLOw4N72/Hu+UG6MNt5iDZFCtapRaKt6OvSBwy8w==
         { id: 123 },
         {
           headers: {
-            accept: "application/vnd.github.machine-man-preview+json",
+            accept: "application/vnd.github.v3+json",
             "user-agent": userAgent,
             authorization: `bearer ${BEARER}`,
           },
@@ -129,7 +129,7 @@ x//0u+zd/R/QRUzLOw4N72/Hu+UG6MNt5iDZFCtapRaKt6OvSBwy8w==
         { id: 456 },
         {
           headers: {
-            accept: "application/vnd.github.machine-man-preview+json",
+            accept: "application/vnd.github.v3+json",
             "user-agent": userAgent,
             authorization: `token secret123`,
           },
@@ -141,9 +141,6 @@ x//0u+zd/R/QRUzLOw4N72/Hu+UG6MNt5iDZFCtapRaKt6OvSBwy8w==
       installationId: 123,
     });
     const requestWithAuth = request.defaults({
-      mediaType: {
-        previews: ["machine-man"],
-      },
       request: {
         fetch: mock,
         hook: auth.hook,
@@ -625,7 +622,6 @@ x//0u+zd/R/QRUzLOw4N72/Hu+UG6MNt5iDZFCtapRaKt6OvSBwy8w==
         },
         mediaType: {
           format: "",
-          previews: [],
         },
         method: "GET",
         request: {
@@ -687,7 +683,7 @@ x//0u+zd/R/QRUzLOw4N72/Hu+UG6MNt5iDZFCtapRaKt6OvSBwy8w==
   it("options.mediaType.previews", function () {
     const mock = fetchMock
       .sandbox()
-      .mock("https://api.github.com/repos/octokit/request.js/issues/1", "ok", {
+      .mock("https://api.github.com/graphql", "ok", {
         headers: {
           accept:
             "application/vnd.github.foo-preview+json,application/vnd.github.bar-preview+json",
@@ -696,16 +692,13 @@ x//0u+zd/R/QRUzLOw4N72/Hu+UG6MNt5iDZFCtapRaKt6OvSBwy8w==
         },
       });
 
-    return request("GET /repos/{owner}/{repo}/issues/{number}", {
+    return request("GET /graphql", {
       headers: {
         authorization: "token 0000000000000000000000000000000000000001",
       },
       mediaType: {
         previews: ["foo", "bar"],
       },
-      owner: "octokit",
-      repo: "request.js",
-      number: 1,
       request: {
         fetch: mock,
       },
@@ -732,7 +725,7 @@ x//0u+zd/R/QRUzLOw4N72/Hu+UG6MNt5iDZFCtapRaKt6OvSBwy8w==
       {
         method: "PUT",
         headers: {
-          accept: "application/vnd.github.luke-cage-preview+json",
+          accept: "application/vnd.github.v3+json",
           authorization: "token secret123",
         },
       }
@@ -740,7 +733,6 @@ x//0u+zd/R/QRUzLOw4N72/Hu+UG6MNt5iDZFCtapRaKt6OvSBwy8w==
 
     return request("PUT /repos/{owner}/{repo}/branches/{branch}/protection", {
       baseUrl: "https://request-errors-test.com",
-      mediaType: { previews: ["luke-cage"] },
       headers: {
         authorization: "token secret123",
       },