diff --git a/lodash/lodash-tests.ts b/lodash/lodash-tests.ts
index d0cfba393..974d0b966 100644
--- a/lodash/lodash-tests.ts
+++ b/lodash/lodash-tests.ts
@@ -2739,9 +2739,46 @@ module TestFindKey {
     }
 }
 
-result = <string>_.findLastKey({ 'a': 1, 'b': 2, 'c': 3, 'd': 4 }, function (num) {
-    return num % 2 == 1;
-});
+// _.findLastKey
+module TestFindLastKey {
+    let result: string;
+
+    {
+        let predicateFn: (value: any, key?: string, object?: {}) => boolean;
+
+        result = _.findLastKey<{a: string;}>({a: ''});
+
+        result = _.findLastKey<{a: string;}>({a: ''}, predicateFn);
+        result = _.findLastKey<{a: string;}>({a: ''}, predicateFn, any);
+
+
+        result = _.findLastKey<{a: string;}>({a: ''}, '');
+        result = _.findLastKey<{a: string;}>({a: ''}, '', any);
+
+        result = _.findLastKey<{a: number;}, {a: string;}>({a: ''}, {a: 42});
+
+        result = _<{a: string;}>({a: ''}).findLastKey();
+
+        result = _<{a: string;}>({a: ''}).findLastKey(predicateFn);
+        result = _<{a: string;}>({a: ''}).findLastKey(predicateFn, any);
+
+
+        result = _<{a: string;}>({a: ''}).findLastKey('');
+        result = _<{a: string;}>({a: ''}).findLastKey('', any);
+
+        result = _<{a: string;}>({a: ''}).findLastKey<{a: number;}>({a: 42});
+    }
+
+    {
+        let predicateFn: (value: string, key?: string, collection?: _.Dictionary<string>) => boolean;
+
+        result = _.findLastKey<string, {a: string;}>({a: ''}, predicateFn);
+        result = _.findLastKey<string, {a: string;}>({a: ''}, predicateFn, any);
+
+        result = _<{a: string;}>({a: ''}).findLastKey<string>(predicateFn);
+        result = _<{a: string;}>({a: ''}).findLastKey<string>(predicateFn, any);
+    }
+}
 
 result = <Dog>_.forIn(new Dog('Dagny'), function (value, key) {
     console.log(key);
diff --git a/lodash/lodash.d.ts b/lodash/lodash.d.ts
index e327e87e8..c07cfd0e3 100644
--- a/lodash/lodash.d.ts
+++ b/lodash/lodash.d.ts
@@ -7830,32 +7830,86 @@ declare module _ {
     //_.findLastKey
     interface LoDashStatic {
         /**
-        * This method is like _.findKey except that it iterates over elements of a collection in the opposite order.
-        * @param object The object to search.
-        * @param callback The function called per iteration.
-        * @param thisArg The this binding of callback.
-        * @return The key of the found element, else undefined.
-        **/
-        findLastKey(
-            object: any,
-            callback: (value: any) => boolean,
-            thisArg?: any): string;
+         * This method is like _.findKey except that it iterates over elements of a collection in the opposite order.
+         *
+         * If a property name is provided for predicate the created _.property style callback returns the property
+         * value of the given element.
+         *
+         * If a value is also provided for thisArg the created _.matchesProperty style callback returns true for
+         * elements that have a matching property value, else false.
+         *
+         * If an object is provided for predicate the created _.matches style callback returns true for elements that
+         * have the properties of the given object, else false.
+         *
+         * @param object The object to search.
+         * @param predicate The function invoked per iteration.
+         * @param thisArg The this binding of predicate.
+         * @return Returns the key of the matched element, else undefined.
+         */
+        findLastKey<TValues, TObject>(
+            object: TObject,
+            predicate?: DictionaryIterator<TValues, boolean>,
+            thisArg?: any
+        ): string;
 
         /**
-        * @see _.findLastKey
-        * @param pluckValue _.pluck style callback
-        **/
-        findLastKey(
-            object: any,
-            pluckValue: string): string;
+         * @see _.findLastKey
+         */
+        findLastKey<TObject>(
+            object: TObject,
+            predicate?: ObjectIterator<any, boolean>,
+            thisArg?: any
+        ): string;
 
         /**
-        * @see _.findLastKey
-        * @param whereValue _.where style callback
-        **/
-        findLastKey<W extends Dictionary<any>, T>(
-            object: T,
-            whereValue: W): string;
+         * @see _.findLastKey
+         */
+        findLastKey<TObject>(
+            object: TObject,
+            predicate?: string,
+            thisArg?: any
+        ): string;
+
+        /**
+         * @see _.findLastKey
+         */
+        findLastKey<TWhere extends Dictionary<any>, TObject>(
+            object: TObject,
+            predicate?: TWhere
+        ): string;
+    }
+
+    interface LoDashObjectWrapper<T> {
+        /**
+         * @see _.findLastKey
+         */
+        findLastKey<TValues>(
+            predicate?: DictionaryIterator<TValues, boolean>,
+            thisArg?: any
+        ): string;
+
+        /**
+         * @see _.findLastKey
+         */
+        findLastKey(
+            predicate?: ObjectIterator<any, boolean>,
+            thisArg?: any
+        ): string;
+
+        /**
+         * @see _.findLastKey
+         */
+        findLastKey(
+            predicate?: string,
+            thisArg?: any
+        ): string;
+
+        /**
+         * @see _.findLastKey
+         */
+        findLastKey<TWhere extends Dictionary<any>>(
+            predicate?: TWhere
+        ): string;
     }
 
     //_.forIn