diff --git a/consumer-app/composer.lock b/consumer-app/composer.lock
index 9ff3d7b..33fccbd 100644
--- a/consumer-app/composer.lock
+++ b/consumer-app/composer.lock
@@ -723,23 +723,23 @@
         },
         {
             "name": "google/protobuf",
-            "version": "v4.31.1",
+            "version": "v4.33.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/protocolbuffers/protobuf-php.git",
-                "reference": "2b028ce8876254e2acbeceea7d9b573faad41864"
+                "reference": "b50269e23204e5ae859a326ec3d90f09efe3047d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/protocolbuffers/protobuf-php/zipball/2b028ce8876254e2acbeceea7d9b573faad41864",
-                "reference": "2b028ce8876254e2acbeceea7d9b573faad41864",
+                "url": "https://api.github.com/repos/protocolbuffers/protobuf-php/zipball/b50269e23204e5ae859a326ec3d90f09efe3047d",
+                "reference": "b50269e23204e5ae859a326ec3d90f09efe3047d",
                 "shasum": ""
             },
             "require": {
-                "php": ">=7.0.0"
+                "php": ">=8.1.0"
             },
             "require-dev": {
-                "phpunit/phpunit": ">=5.0.0"
+                "phpunit/phpunit": ">=5.0.0 <8.5.27"
             },
             "suggest": {
                 "ext-bcmath": "Need to support JSON deserialization"
@@ -761,9 +761,9 @@
                 "proto"
             ],
             "support": {
-                "source": "https://github.com/protocolbuffers/protobuf-php/tree/v4.31.1"
+                "source": "https://github.com/protocolbuffers/protobuf-php/tree/v4.33.0"
             },
-            "time": "2025-05-28T18:52:35+00:00"
+            "time": "2025-10-15T20:10:28+00:00"
         },
         {
             "name": "graham-campbell/result-type",
diff --git a/publisher-app/composer.lock b/publisher-app/composer.lock
index d13fd5c..1260ea6 100644
--- a/publisher-app/composer.lock
+++ b/publisher-app/composer.lock
@@ -642,23 +642,23 @@
         },
         {
             "name": "google/protobuf",
-            "version": "v4.31.1",
+            "version": "v4.33.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/protocolbuffers/protobuf-php.git",
-                "reference": "2b028ce8876254e2acbeceea7d9b573faad41864"
+                "reference": "b50269e23204e5ae859a326ec3d90f09efe3047d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/protocolbuffers/protobuf-php/zipball/2b028ce8876254e2acbeceea7d9b573faad41864",
-                "reference": "2b028ce8876254e2acbeceea7d9b573faad41864",
+                "url": "https://api.github.com/repos/protocolbuffers/protobuf-php/zipball/b50269e23204e5ae859a326ec3d90f09efe3047d",
+                "reference": "b50269e23204e5ae859a326ec3d90f09efe3047d",
                 "shasum": ""
             },
             "require": {
-                "php": ">=7.0.0"
+                "php": ">=8.1.0"
             },
             "require-dev": {
-                "phpunit/phpunit": ">=5.0.0"
+                "phpunit/phpunit": ">=5.0.0 <8.5.27"
             },
             "suggest": {
                 "ext-bcmath": "Need to support JSON deserialization"
@@ -680,9 +680,9 @@
                 "proto"
             ],
             "support": {
-                "source": "https://github.com/protocolbuffers/protobuf-php/tree/v4.31.1"
+                "source": "https://github.com/protocolbuffers/protobuf-php/tree/v4.33.0"
             },
-            "time": "2025-05-28T18:52:35+00:00"
+            "time": "2025-10-15T20:10:28+00:00"
         },
         {
             "name": "graham-campbell/result-type",