diff --git a/.gitignore b/.gitignore
index d8a7996..48b8bf9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1 @@
-composer.lock
 vendor/
diff --git a/composer.lock b/composer.lock
new file mode 100644
index 0000000..b506b9d
--- /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": "7f407acae21f3deea948660dd0db9eed",
+    "packages": [
+        {
+            "name": "clue/hexdump",
+            "version": "v0.2.0",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/clue/php-hexdump.git",
+                "reference": "d2fdb529522f60fd0855cb424afaa77ad9b1493b"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/clue/php-hexdump/zipball/d2fdb529522f60fd0855cb424afaa77ad9b1493b",
+                "reference": "d2fdb529522f60fd0855cb424afaa77ad9b1493b",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=5.3"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-0": {
+                    "Clue\\Hexdump": "src/"
+                }
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "MIT"
+            ],
+            "description": "View any (binary) string as a hexdump",
+            "homepage": "https://github.com/clue/hexdump",
+            "keywords": [
+                "binary",
+                "hexdump",
+                "network protocol debugging"
+            ],
+            "support": {
+                "issues": "https://github.com/clue/php-hexdump/issues",
+                "source": "https://github.com/clue/php-hexdump/tree/v0.2.0"
+            },
+            "time": "2013-06-22T21:28:05+00:00"
+        }
+    ],
+    "packages-dev": [],
+    "aliases": [],
+    "minimum-stability": "stable",
+    "stability-flags": [],
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": [],
+    "platform-dev": [],
+    "plugin-api-version": "2.0.0"
+}