diff --git a/Assets/package.json b/Assets/package.json
new file mode 100644
index 0000000..6874c5c
--- /dev/null
+++ b/Assets/package.json
@@ -0,0 +1,9 @@
+{
+    "name": "dev.n5y.asmdefhelper",
+    "displayName": "AsmdefHelper",
+    "version": "0.2.1",
+    "unity": "2019.3",
+    "description": "Unity assembly definition utilities.",
+    "keywords": ["asmdef", "editor"],
+    "author" : { "name": "naninunenoy" }
+}
\ No newline at end of file
diff --git a/Assets/package.json.meta b/Assets/package.json.meta
new file mode 100644
index 0000000..1efe40c
--- /dev/null
+++ b/Assets/package.json.meta
@@ -0,0 +1,7 @@
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