diff --git a/composer.lock b/composer.lock
new file mode 100644
index 0000000..ddacdd7
--- /dev/null
+++ b/composer.lock
@@ -0,0 +1,59 @@
+{
+    "_readme": [
+        "This file locks the dependencies of your project to a known state",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
+        "This file is @generated automatically"
+    ],
+    "content-hash": "51ea1e0e96ec32af036c55f3fc514e97",
+    "packages": [
+        {
+            "name": "google/protobuf",
+            "version": "v3.11.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/protocolbuffers/protobuf-php.git",
+                "reference": "0864882396746542ead01fc002e1644b9490dbe8"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/protocolbuffers/protobuf-php/zipball/0864882396746542ead01fc002e1644b9490dbe8",
+                "reference": "0864882396746542ead01fc002e1644b9490dbe8",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.5.0"
+            },
+            "require-dev": {
+                "phpunit/phpunit": ">=4.8.0"
+            },
+            "suggest": {
+                "ext-bcmath": "Need to support JSON deserialization"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Google\\Protobuf\\": "src/Google/Protobuf",
+                    "GPBMetadata\\Google\\Protobuf\\": "src/GPBMetadata/Google/Protobuf"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "BSD-3-Clause"
+            ],
+            "description": "proto library for PHP",
+            "homepage": "https://developers.google.com/protocol-buffers/",
+            "keywords": [
+                "proto"
+            ],
+            "time": "2019-12-14T00:45:36+00:00"
+        }
+    ],
+    "packages-dev": [],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": [],
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": [],
+    "platform-dev": []
+}