diff --git a/lodash/lodash-tests.ts b/lodash/lodash-tests.ts
index a16671bd7..cad1232b0 100644
--- a/lodash/lodash-tests.ts
+++ b/lodash/lodash-tests.ts
@@ -892,6 +892,24 @@ var helloWrap2 = _.wrap(helloWrap, function (func) {
 });
 helloWrap2();
 
+/********
+ * Lang *
+ ********/
+
+// _.toPlainObject
+result = <Object>_.toPlainObject();
+result = <Object>_.toPlainObject(true);
+result = <Object>_.toPlainObject(1);
+result = <Object>_.toPlainObject('a');
+result = <Object>_.toPlainObject([]);
+result = <Object>_.toPlainObject({});
+result = <Object>_(true).toPlainObject();
+result = <Object>_(1).toPlainObject();
+result = <Object>_('a').toPlainObject();
+result = <Object>_([1]).toPlainObject();
+result = <Object>_<string>([]).toPlainObject();
+result = <Object>_({}).toPlainObject();
+
 /**********
 * Objects *
 ***********/
diff --git a/lodash/lodash.d.ts b/lodash/lodash.d.ts
index 9a4945228..3b792101f 100644
--- a/lodash/lodash.d.ts
+++ b/lodash/lodash.d.ts
@@ -196,6 +196,11 @@ declare module _ {
         * @see _.value
         **/
         valueOf(): T;
+
+        /**
+         * @see _.toPlainObject
+         */
+        toPlainObject(): Object;
     }
 
     interface LoDashWrapper<T> extends LoDashWrapperBase<T, LoDashWrapper<T>> { }
@@ -5473,6 +5478,21 @@ declare module _ {
             wrapper: (func: Function, ...args: any[]) => any): Function;
     }
 
+    /********
+     * Lang *
+     ********/
+
+    //_.toPlainObject
+    interface LoDashStatic {
+        /**
+         * Converts value to a plain object flattening inherited enumerable properties of value to own properties
+         * of the plain object.
+         * @param value The value to convert.
+         * @return Returns the converted plain object.
+         */
+        toPlainObject(value?: any): Object;
+    }
+
     /*************
      * Objects   *
      *************/