diff --git a/composer.json b/composer.json
index d1c737b..11dacf8 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
         "php": ">=8.1",
         "ext-openssl": "*",
         "ext-sodium": "*",
-        "web-token/jwt-checker": "^3.2",
+        "web-token/jwt-checker": "^4.0",
         "web-token/jwt-core": "^3.0",
         "web-token/jwt-framework": "^3.2",
         "web-token/jwt-key-mgmt": "^3.2",
diff --git a/src/OpenId.php b/src/OpenId.php
index ad040fe..0ba60b9 100644
--- a/src/OpenId.php
+++ b/src/OpenId.php
@@ -389,7 +389,7 @@ public function discover($url)
         $yadis = true;
 
         // We'll jump a maximum of 5 times, to avoid endless redirections.
-        for ($i = 0; $i < 5; $i ++) {
+        for ($i = 0; $i < 5; $i++) {
             if ($yadis) {
                 $headers = $this->sendRequest($url, 'HEAD');