diff --git a/package.json b/package.json
index c067e53d7c..d49ffdb706 100644
--- a/package.json
+++ b/package.json
@@ -106,6 +106,7 @@
     "memoize-one": "^5.0.2",
     "node-vibrant": "^3.1.5",
     "proxy-polyfill": "^0.3.1",
+    "punycode": "^2.1.1",
     "regenerator-runtime": "^0.13.2",
     "resize-observer-polyfill": "^1.5.1",
     "roboto-fontface": "^0.10.0",
diff --git a/src/auth/ha-authorize.ts b/src/auth/ha-authorize.ts
index 989525cb23..72404d153e 100644
--- a/src/auth/ha-authorize.ts
+++ b/src/auth/ha-authorize.ts
@@ -16,6 +16,7 @@ import { litLocalizeLiteMixin } from "../mixins/lit-localize-lite-mixin";
 import { registerServiceWorker } from "../util/register-service-worker";
 import "./ha-auth-flow";
 import { extractSearchParamsObject } from "../common/url/search-params";
+import punycode from "punycode";
 
 import(/* webpackChunkName: "pick-auth-provider" */ "./ha-pick-auth-provider");
 
@@ -75,7 +76,7 @@ class HaAuthorize extends litLocalizeLiteMixin(LitElement) {
         ${this.localize(
           "ui.panel.page-authorize.authorizing_client",
           "clientId",
-          this.clientId
+          this.clientId ? punycode.toASCII(this.clientId) : this.clientId
         )}
       </p>
       ${loggingInWith}
diff --git a/yarn.lock b/yarn.lock
index c813bc0508..8a9ddcb099 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -9887,7 +9887,7 @@ punycode@^1.2.4, punycode@^1.3.2:
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.4.1.tgz#c0d5a63b2718800ad8e1eb0fa5269c84dd41845e"
   integrity sha1-wNWmOycYgArY4esPpSachN1BhF4=
 
-punycode@^2.1.0:
+punycode@^2.1.0, punycode@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.1.1.tgz#b58b010ac40c22c5657616c8d2c2c02c7bf479ec"
   integrity sha512-XRsRjdf+j5ml+y/6GKHPZbrF/8p2Yga0JPtdqTIY2Xe5ohJPD9saDJJLPvp9+NSBprVvevdXZybnj2cv8OEd0A==