diff --git a/README.markdown b/README.markdown
index d69768a..7407517 100644
--- a/README.markdown
+++ b/README.markdown
@@ -67,6 +67,8 @@ version 1.0.4 if you require camel casing of names.*
 
 - Fix an issue (#2) where arrays longer than 2 resulted in incorrect values
 
+## Known issues
 
-[![Bitdeli Badge](https://d2weczhvl823v0.cloudfront.net/hongymagic/jquery.serializeobject/trend.png)](https://bitdeli.com/free "Bitdeli Badge")
+- In rare cases, this won't work with old checkbox/hidden hack. See [this issue for more details](https://github.com/hongymagic/jQuery.serializeObject/issues/9).
 
+[![Bitdeli Badge](https://d2weczhvl823v0.cloudfront.net/hongymagic/jquery.serializeobject/trend.png)](https://bitdeli.com/free "Bitdeli Badge")
diff --git a/jquery.serializeObject.d.ts b/jquery.serializeObject.d.ts
new file mode 100644
index 0000000..3aea456
--- /dev/null
+++ b/jquery.serializeObject.d.ts
@@ -0,0 +1,4 @@
+
+interface JQuery {
+    serializeObject(): { [index: string]: string|string[] }
+}
diff --git a/package.json b/package.json
index 2e3b0a0..b07a0b7 100644
--- a/package.json
+++ b/package.json
@@ -1,8 +1,9 @@
 {
   "name": "jQuery.serializeObject",
-  "version": "2.0.3",
+  "version": "2.0.4",
   "description": "A jQuery plugin to turn form data into JSON",
   "main": "jquery.serializeObject.js",
+  "types": "jquery.serializeObject.d.ts",
   "directories": {
     "test": "test"
   },