diff --git a/composer.json b/composer.json
index 804cdc3b..9efabab0 100644
--- a/composer.json
+++ b/composer.json
@@ -2,7 +2,7 @@
     "name": "imsglobal/lti-1p3-tool",
     "type": "library",
     "require": {
-        "fproject/php-jwt": "^4.0",
+        "firebase/php-jwt": "^5.2",
         "phpseclib/phpseclib": "^2.0"
     },
     "autoload": {
diff --git a/src/lti/LTI_Message_Launch.php b/src/lti/LTI_Message_Launch.php
index 5dd9b6f1..0ce94331 100644
--- a/src/lti/LTI_Message_Launch.php
+++ b/src/lti/LTI_Message_Launch.php
@@ -191,7 +191,11 @@ private function get_public_key() {
         foreach ($public_key_set['keys'] as $key) {
             if ($key['kid'] == $this->jwt['header']['kid']) {
                 try {
-                    return openssl_pkey_get_details(JWK::parseKey($key));
+                    return openssl_pkey_get_details(
+                        JWK::parseKeySet([
+                            'keys' => [$key]
+                        ])[$key['kid']]
+                    );
                 } catch(\Exception $e) {
                     return false;
                 }