diff --git a/extension-control/update.ts b/extension-control/update.ts
new file mode 100644
index 000000000..dc1f1fc0e
--- /dev/null
+++ b/extension-control/update.ts
@@ -0,0 +1,114 @@
+// This script automatically updates ./extensions.json with the latest changes from upstream.
+// usage: bun update.ts
+
+import { diff } from "jest-diff";
+import path from "path";
+
+// https://github.com/microsoft/vscode/blob/a2acd131e47500cf4bd7d602626f0b54ab266904/src/vs/platform/extensionManagement/common/extensionManagement.ts#L314
+interface ISearchPrefferedResults {
+    readonly query?: string;
+    readonly preferredResults?: string[];
+}
+
+export type IStringDictionary<V> = Record<string, V>;
+
+// https://github.com/microsoft/vscode/blob/a2acd131e47500cf4bd7d602626f0b54ab266904/src/vs/platform/extensionManagement/common/extensionGalleryService.ts#L563
+interface IRawExtensionsControlManifest {
+    malicious: string[];
+    migrateToPreRelease?: IStringDictionary<{
+        id: string;
+        displayName: string;
+        migrateStorage?: boolean;
+        engine?: string;
+    }>;
+    deprecated?: IStringDictionary<
+        | boolean
+        | {
+              disallowInstall?: boolean;
+              extension?: {
+                  id: string;
+                  displayName: string;
+              };
+              settings?: string[];
+          }
+    >;
+    search?: ISearchPrefferedResults[];
+}
+
+const existsOnOpenVSX = async (id: string) => {
+    const response = await fetch(`https://open-vsx.org/api/${id.replace(/\./g, "/")}`);
+    if (response.ok) {
+        console.log(`Extension ${id} exists on OpenVSX.`);
+        return true;
+    }
+
+    console.log(`Extension ${id} does not exist on OpenVSX.`);
+    return false;
+};
+
+const latestData = await fetch("https://az764295.vo.msecnd.net/extensions/marketplace.json");
+const latestJson = (await latestData.json()) as IStringDictionary<IRawExtensionsControlManifest>;
+
+const localFile = Bun.file(path.resolve(__dirname, "./extensions.json"));
+const localData = JSON.parse(await localFile.text()) as IStringDictionary<IRawExtensionsControlManifest>;
+const updatedData = structuredClone(localData);
+
+for (const key of Object.values(latestJson.malicious)) {
+    if (!localData.malicious.includes(key)) {
+        const exists = await existsOnOpenVSX(key);
+        if (exists) {
+            updatedData.malicious.push(key);
+        }
+    }
+}
+
+const missingDependency = [];
+for (const key of Object.keys(latestJson.deprecated)) {
+    if (key in localData.deprecated) {
+        continue;
+    }
+
+    const extensionsToCheck = [key];
+    const value = latestJson.deprecated[key];
+    if (typeof value === "object" && value.extension) {
+        extensionsToCheck.push(value.extension.id);
+    }
+
+    // Ensure both extensions exist on OpenVSX, if only key exists, set its entry to true instead of the original object
+    const exists = await Promise.all(extensionsToCheck.map(existsOnOpenVSX));
+    if (exists.every((x) => x)) {
+        updatedData.deprecated[key] = latestJson.deprecated[key];
+    }
+
+    if (exists.length === 2 && exists[0] && !exists[1]) {
+        missingDependency.push(key);
+    }
+}
+
+for (const key of Object.keys(latestJson.migrateToPreRelease)) {
+    if (key in localData.migrateToPreRelease) {
+        continue;
+    }
+
+    const exists = await existsOnOpenVSX(key);
+    if (exists) {
+        updatedData.migrateToPreRelease[key] = latestJson.migrateToPreRelease[key];
+    }
+}
+
+const totalNumberBefore = Object.keys(localData)
+    .map((x) => Object.keys(localData[x]).length)
+    .reduce((a, b) => a + b, 0);
+
+const totalNumberAfter = Object.keys(updatedData)
+    .map((x) => Object.keys(updatedData[x]).length)
+    .reduce((a, b) => a + b, 0);
+
+console.log(`Total number of entries before: ${totalNumberBefore}`);
+console.log(`Total number of entries after: ${totalNumberAfter}`);
+
+console.log(missingDependency);
+
+console.log(diff(updatedData, localData));
+
+Bun.write(localFile, JSON.stringify(updatedData, null, 4));
diff --git a/package.json b/package.json
index fcacccf48..16f435a7b 100644
--- a/package.json
+++ b/package.json
@@ -30,10 +30,13 @@
   "dependencies": {
     "@vscode/vsce": "^2.18.0",
     "ajv": "^8.8.1",
+    "chai": "^5.1.0",
+    "deep-equal-in-any-order": "^2.0.6",
     "download": "^8.0.0",
     "fast-glob": "^3.2.12",
     "find-up": "^5.0.0",
     "human-number": "^2.0.0",
+    "jest-diff": "^29.7.0",
     "minimist": "^1.2.5",
     "octokit": "^3.1.2",
     "ovsx": "latest",