diff --git a/composer.json b/composer.json
index 64f65dcc..ef5aa4a8 100644
--- a/composer.json
+++ b/composer.json
@@ -30,7 +30,7 @@
   },
   "require": {
     "id4me/id4me-rp": "^1.2",
-    "firebase/php-jwt": "^5.2",
+    "firebase/php-jwt": "^6.4",
     "bamarni/composer-bin-plugin": "^1.4"
   },
   "require-dev": {
diff --git a/composer.lock b/composer.lock
index 849c3d67..48a4345d 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "eceab4317e87253bab686f61fa020d3e",
+    "content-hash": "60336dcc6a4df4878da3ab75adcb560f",
     "packages": [
         {
             "name": "bamarni/composer-bin-plugin",
@@ -65,25 +65,31 @@
         },
         {
             "name": "firebase/php-jwt",
-            "version": "v5.5.1",
+            "version": "v6.4.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/firebase/php-jwt.git",
-                "reference": "83b609028194aa042ea33b5af2d41a7427de80e6"
+                "reference": "4dd1e007f22a927ac77da5a3fbb067b42d3bc224"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/firebase/php-jwt/zipball/83b609028194aa042ea33b5af2d41a7427de80e6",
-                "reference": "83b609028194aa042ea33b5af2d41a7427de80e6",
+                "url": "https://api.github.com/repos/firebase/php-jwt/zipball/4dd1e007f22a927ac77da5a3fbb067b42d3bc224",
+                "reference": "4dd1e007f22a927ac77da5a3fbb067b42d3bc224",
                 "shasum": ""
             },
             "require": {
-                "php": ">=5.3.0"
+                "php": "^7.1||^8.0"
             },
             "require-dev": {
-                "phpunit/phpunit": ">=4.8 <=9"
+                "guzzlehttp/guzzle": "^6.5||^7.4",
+                "phpspec/prophecy-phpunit": "^1.1",
+                "phpunit/phpunit": "^7.5||^9.5",
+                "psr/cache": "^1.0||^2.0",
+                "psr/http-client": "^1.0",
+                "psr/http-factory": "^1.0"
             },
             "suggest": {
+                "ext-sodium": "Support EdDSA (Ed25519) signatures",
                 "paragonie/sodium_compat": "Support EdDSA (Ed25519) signatures when libsodium is not present"
             },
             "type": "library",
@@ -116,9 +122,9 @@
             ],
             "support": {
                 "issues": "https://github.com/firebase/php-jwt/issues",
-                "source": "https://github.com/firebase/php-jwt/tree/v5.5.1"
+                "source": "https://github.com/firebase/php-jwt/tree/v6.4.0"
             },
-            "time": "2021-11-08T20:18:51+00:00"
+            "time": "2023-02-09T21:01:23+00:00"
         },
         {
             "name": "id4me/id4me-rp",