diff --git a/src/IdTokenResponse.php b/src/IdTokenResponse.php
index 4e10186..c143a8b 100644
--- a/src/IdTokenResponse.php
+++ b/src/IdTokenResponse.php
@@ -55,17 +55,10 @@ protected function getBuilder(
             ($this->useMicroseconds ? microtime(true) : time())
         );
 
-        if ($this->currentRequestService) {
-            $uri = $this->currentRequestService->getRequest()->getUri();
-            $issuer = $uri->getScheme() . '://' . $uri->getHost() . ($uri->getPort() ? ':' . $uri->getPort() : '');
-        } else {
-            $issuer = 'https://' . $_SERVER['HTTP_HOST'];
-        }
-
         return $this->config
             ->builder()
             ->permittedFor($accessToken->getClient()->getIdentifier())
-            ->issuedBy($issuer)
+            ->issuedBy('https://' . $_SERVER['HTTP_HOST'])
             ->issuedAt($dateTimeImmutableObject)
             ->expiresAt($dateTimeImmutableObject->add(new DateInterval('PT1H')))
             ->relatedTo($userEntity->getIdentifier());
diff --git a/src/Laravel/DiscoveryController.php b/src/Laravel/DiscoveryController.php
index cb7536d..a36d76e 100644
--- a/src/Laravel/DiscoveryController.php
+++ b/src/Laravel/DiscoveryController.php
@@ -4,6 +4,7 @@
 
 use Illuminate\Http\Request;
 use Illuminate\Support\Facades\Route;
+use Illuminate\Support\Facades\URL;
 use Laravel\Passport\Passport;
 
 class DiscoveryController
@@ -13,8 +14,10 @@ class DiscoveryController
      */
     public function __invoke(Request $request)
     {
+        URL::forceScheme('https'); // for route() calls below
+
         $response = [
-            'issuer' => url('/'),
+            'issuer' => 'https://' . $_SERVER['HTTP_HOST'],
             'authorization_endpoint' => route('passport.authorizations.authorize'),
             'token_endpoint' => route('passport.token'),
             'grant_types_supported' => $this->getSupportedGrantTypes(),