diff --git a/patches/jest-environment-jsdom+29.7.0.patch b/patches/jest-environment-jsdom+29.7.0.patch
new file mode 100644
index 00000000000..39b42ec75b6
--- /dev/null
+++ b/patches/jest-environment-jsdom+29.7.0.patch
@@ -0,0 +1,19 @@
+diff --git a/node_modules/jest-environment-jsdom/build/index.js b/node_modules/jest-environment-jsdom/build/index.js
+index 2e6c16c..ce5c77d 100644
+--- a/node_modules/jest-environment-jsdom/build/index.js
++++ b/node_modules/jest-environment-jsdom/build/index.js
+@@ -96,6 +96,14 @@ class JSDOMEnvironment {
+     // TODO: remove this ASAP, but it currently causes tests to run really slow
+     global.Buffer = Buffer;
+ 
++    // Add mocks for schemaProxy tests that rely on `Response` and `fetch`
++    // being globally available
++    global.fetch = fetch;
++    global.Headers = Headers;
++    global.Request = Request;
++    global.Response = Response;
++    global.AbortController = AbortController;
++
+     // Report uncaught errors.
+     this.errorEventListener = event => {
+       if (userErrorListenerCount === 0 && event.error != null) {
diff --git a/src/testing/core/__tests__/schemaProxy.test.tsx b/src/testing/core/__tests__/schemaProxy.test.tsx
index 3dd09999e25..9e798d35d3a 100644
--- a/src/testing/core/__tests__/schemaProxy.test.tsx
+++ b/src/testing/core/__tests__/schemaProxy.test.tsx
@@ -788,6 +788,7 @@ describe("schema proxy", () => {
 
     const { ErrorBoundary } = createTrackedErrorComponents(Profiler);
 
+    // @ts-expect-error - we're intentionally passing an invalid schema
     using _fetch = createMockFetch(forkedSchema);
 
     const client = new ApolloClient({
diff --git a/src/testing/core/mockFetchWithSchema.ts b/src/testing/core/mockFetchWithSchema.ts
index 386dbbafc0b..c0ddde0f26e 100644
--- a/src/testing/core/mockFetchWithSchema.ts
+++ b/src/testing/core/mockFetchWithSchema.ts
@@ -1,11 +1,10 @@
-import { Response as NodeFetchResponse } from "node-fetch";
 import { execute, validate } from "graphql";
-import type { GraphQLError } from "graphql";
+import type { GraphQLError, GraphQLSchema } from "graphql";
 import { ApolloError, gql } from "../../core/index.js";
 import { withCleanup } from "../internal/index.js";
 
 const createMockFetch = (
-  schema: any,
+  schema: GraphQLSchema,
   mockFetchOpts: { validate: boolean } = { validate: true }
 ) => {
   const prevFetch = window.fetch;
@@ -31,9 +30,7 @@ const createMockFetch = (
 
         if (validationErrors?.length > 0) {
           return resolve(
-            new NodeFetchResponse(
-              JSON.stringify({ errors: validationErrors })
-            ) as unknown as Response
+            new Response(JSON.stringify({ errors: validationErrors }))
           );
         }
       }
@@ -47,7 +44,7 @@ const createMockFetch = (
 
       const stringifiedResult = JSON.stringify(result);
 
-      resolve(new NodeFetchResponse(stringifiedResult) as unknown as Response);
+      resolve(new Response(stringifiedResult));
     });
   };