diff --git a/examples/oauth.ts b/examples/jar.ts
index dde3bbc..2a3f17c 100644
--- a/examples/oauth.ts
+++ b/examples/jar.ts
@@ -6,6 +6,7 @@ let getCurrentUrl!: (...args: any) => URL
 let server!: URL // Authorization server's Issuer Identifier URL
 let clientId!: string
 let clientSecret!: string
+let clientPrivateKey!: client.CryptoKey | client.PrivateKey
 /**
  * Value used in the authorization request as redirect_uri pre-registered at the
  * Authorization Server.
@@ -47,7 +48,11 @@ let state!: string
     parameters.state = state
   }
 
-  let redirectTo = client.buildAuthorizationUrl(config, parameters)
+  let redirectTo = await client.buildAuthorizationUrlWithJAR(
+    config,
+    parameters,
+    clientPrivateKey,
+  )
 
   console.log('redirecting to', redirectTo.href)
   // now redirect the user to redirectTo.href