diff --git a/package.json b/package.json
index 2bed910..81dff50 100644
--- a/package.json
+++ b/package.json
@@ -19,14 +19,14 @@
         "@types/archiver": "^3.0.0",
         "@types/fs-extra": "^9.0.0",
         "@types/node": "14",
-        "@types/node-fetch": "^2.5.7",
+        "@types/node-fetch": "^2.6.0",
         "archiver": "^3.0.3",
         "capitalize": "^2.0.2",
         "colors": "^1.4.0",
         "cross-env": "^7.0.3",
         "execa": "^6.0.0",
         "fs-extra": "^10.0.0",
-        "node-fetch": "^2.5.7",
+        "node-fetch": "^2.6.0",
         "ovsx": "^0.8.1",
         "p-queue": "^2.4.2",
         "yargs": "^17.0.0"
diff --git a/src/version.js b/src/version.js
index d97cc93..e8b6d7c 100644
--- a/src/version.js
+++ b/src/version.js
@@ -19,7 +19,7 @@
 /**
  * version-related utility functions
  */
-const fetch = require('node-fetch');
+const {default : fetch} = require('node-fetch');
 const fs = require('fs')
 const { run, vscode } = require('./paths.js');
 
@@ -56,7 +56,9 @@ async function resolveVscodeVersion() {
 async function isPublished(version, extension, namespace = 'vscode') {
     try {
         const registry = process.env.OVSX_REGISTRY_URL ? process.env.OVSX_REGISTRY_URL : OPEN_VSX_ORG_URL;
-        const response = await fetch(`${registry}/api/${namespace}/${extension}/${version}`);
+        let url = `${registry}/api/${namespace}/${extension}`;
+        if (version) { url += "/" + version; }
+        const response = await fetch(url);
         return response.ok;
     } catch (e) {
         console.log(e);
diff --git a/yarn.lock b/yarn.lock
index 89a157a..ec2323d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -29,10 +29,10 @@
   resolved "https://registry.yarnpkg.com/@types/minimatch/-/minimatch-5.1.2.tgz#07508b45797cb81ec3f273011b054cd0755eddca"
   integrity sha512-K0VQKziLUWkVKiRVrx4a40iPaxTUefQmjtkQofBkYRcoaaL/8rhwDWww9qWbrgicNOgnpIsMxyNIUM4+n6dUIA==
 
-"@types/node-fetch@^2.5.7":
-  version "2.6.2"
-  resolved "https://registry.yarnpkg.com/@types/node-fetch/-/node-fetch-2.6.2.tgz#d1a9c5fd049d9415dce61571557104dec3ec81da"
-  integrity sha512-DHqhlq5jeESLy19TYhLakJ07kNumXWjcDdxXsLUMJZ6ue8VZJj4kLPQVE/2mdHh3xZziNF1xppu5lwmS53HR+A==
+"@types/node-fetch@^2.6.0":
+  version "2.6.4"
+  resolved "https://registry.yarnpkg.com/@types/node-fetch/-/node-fetch-2.6.4.tgz#1bc3a26de814f6bf466b25aeb1473fa1afe6a660"
+  integrity sha512-1ZX9fcN4Rvkvgv4E6PAY5WXUFWFcRWxZa3EW83UjycOB9ljJCedb2CupIP4RZMEwF/M3eTcCihbBRgwtGbg5Rg==
   dependencies:
     "@types/node" "*"
     form-data "^3.0.0"
@@ -811,10 +811,10 @@ node-addon-api@^4.3.0:
   resolved "https://registry.yarnpkg.com/node-addon-api/-/node-addon-api-4.3.0.tgz#52a1a0b475193e0928e98e0426a0d1254782b77f"
   integrity sha512-73sE9+3UaLYYFmDsFZnqCInzPyh3MqIwZO9cw58yIqAZhONrrabrYyYe3TuIqtIiOuTXVhsGau8hcrhhwSsDIQ==
 
-node-fetch@^2.5.7:
-  version "2.6.8"
-  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.8.tgz#a68d30b162bc1d8fd71a367e81b997e1f4d4937e"
-  integrity sha512-RZ6dBYuj8dRSfxpUSu+NsdF1dpPpluJxwOp+6IoDp/sH2QNDSvurYsAa+F1WxY2RjA1iP93xhcsUoYbF2XBqVg==
+node-fetch@^2.6.0:
+  version "2.6.12"
+  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.12.tgz#02eb8e22074018e3d5a83016649d04df0e348fba"
+  integrity sha512-C/fGU2E8ToujUivIO0H+tpQ6HWo4eEmchoPIoXtxCrVghxdKq+QOHqEZW7tuP3KlV3bC8FRMO5nMCC7Zm1VP6g==
   dependencies:
     whatwg-url "^5.0.0"