diff --git a/php/jwt/composer.lock b/php/jwt/composer.lock
index c223a89..f6f605b 100644
--- a/php/jwt/composer.lock
+++ b/php/jwt/composer.lock
@@ -8,16 +8,16 @@
     "packages": [
         {
             "name": "firebase/php-jwt",
-            "version": "v5.2.1",
+            "version": "v5.5.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/firebase/php-jwt.git",
-                "reference": "f42c9110abe98dd6cfe9053c49bc86acc70b2d23"
+                "reference": "83b609028194aa042ea33b5af2d41a7427de80e6"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/firebase/php-jwt/zipball/f42c9110abe98dd6cfe9053c49bc86acc70b2d23",
-                "reference": "f42c9110abe98dd6cfe9053c49bc86acc70b2d23",
+                "url": "https://api.github.com/repos/firebase/php-jwt/zipball/83b609028194aa042ea33b5af2d41a7427de80e6",
+                "reference": "83b609028194aa042ea33b5af2d41a7427de80e6",
                 "shasum": ""
             },
             "require": {
@@ -26,6 +26,9 @@
             "require-dev": {
                 "phpunit/phpunit": ">=4.8 <=9"
             },
+            "suggest": {
+                "paragonie/sodium_compat": "Support EdDSA (Ed25519) signatures when libsodium is not present"
+            },
             "type": "library",
             "autoload": {
                 "psr-4": {
@@ -56,9 +59,9 @@
             ],
             "support": {
                 "issues": "https://github.com/firebase/php-jwt/issues",
-                "source": "https://github.com/firebase/php-jwt/tree/v5.2.1"
+                "source": "https://github.com/firebase/php-jwt/tree/v5.5.1"
             },
-            "time": "2021-02-12T00:02:00+00:00"
+            "time": "2021-11-08T20:18:51+00:00"
         }
     ],
     "packages-dev": [],
@@ -69,5 +72,5 @@
     "prefer-lowest": false,
     "platform": [],
     "platform-dev": [],
-    "plugin-api-version": "2.0.0"
+    "plugin-api-version": "2.1.0"
 }