diff --git a/src/Data/composer.json b/src/Data/composer.json
new file mode 100644
index 0000000..e783787
--- /dev/null
+++ b/src/Data/composer.json
@@ -0,0 +1,20 @@
+{
+    "name": "vox/data",
+    "license": "MIT",
+    "autoload": {
+        "psr-4": {
+            "Vox\\Data\\": ""
+        }
+    },
+    "require": {
+        "php": ">=7.0"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "^6.4",
+        "phing/phing": "^2.16",
+        "squizlabs/php_codesniffer": "^2",
+        "phpmd/phpmd": "^2.6",
+        "sebastian/phpcpd": "^3.0",
+        "mayflower/php-codebrowser": "^1.1"
+    }
+}
diff --git a/src/Metadata/composer.json b/src/Metadata/composer.json
new file mode 100644
index 0000000..54d71e3
--- /dev/null
+++ b/src/Metadata/composer.json
@@ -0,0 +1,23 @@
+{
+    "name": "vox/metadata",
+    "license": "MIT",
+    "autoload": {
+        "psr-4": {
+            "Vox\\Metadata\\": ""
+        }
+    },
+    "require": {
+        "php": ">=7.0",
+        "jms/metadata": "^1",
+        "doctrine/annotations": "^1",
+        "symfony/yaml": "^3"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "^6.4",
+        "phing/phing": "^2.16",
+        "squizlabs/php_codesniffer": "^2",
+        "phpmd/phpmd": "^2.6",
+        "sebastian/phpcpd": "^3.0",
+        "mayflower/php-codebrowser": "^1.1"
+    }
+}
diff --git a/src/Serializer/composer.json b/src/Serializer/composer.json
new file mode 100644
index 0000000..7c59a55
--- /dev/null
+++ b/src/Serializer/composer.json
@@ -0,0 +1,21 @@
+{
+    "name": "vox/serializer",
+    "license": "MIT",
+    "autoload": {
+        "psr-4": {
+            "Vox\\Serializer\\": ""
+        }
+    },
+    "require": {
+        "php": ">=7.0",
+        "symfony/serializer": "^3"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "^6.4",
+        "phing/phing": "^2.16",
+        "squizlabs/php_codesniffer": "^2",
+        "phpmd/phpmd": "^2.6",
+        "sebastian/phpcpd": "^3.0",
+        "mayflower/php-codebrowser": "^1.1"
+    }
+}