diff --git a/lodash/lodash-3.10.d.ts b/lodash/lodash-3.10.d.ts
index 00f15d254..cd63bb772 100644
--- a/lodash/lodash-3.10.d.ts
+++ b/lodash/lodash-3.10.d.ts
@@ -13341,40 +13341,65 @@ declare module _ {
          * @param value The value to set.
          * @return Returns object.
          */
-        set<T>(
-            object: T,
+        set<TResult>(
+            object: Object,
             path: StringRepresentable|StringRepresentable[],
             value: any
-        ): T;
+        ): TResult;
 
         /**
          * @see _.set
          */
-        set<V, T>(
-            object: T,
+        set<V, TResult>(
+            object: Object,
             path: StringRepresentable|StringRepresentable[],
             value: V
-        ): T;
+        ): TResult;
+
+        /**
+         * @see _.set
+         */
+        set<O, V, TResult>(
+            object: O,
+            path: StringRepresentable|StringRepresentable[],
+            value: V
+        ): TResult;
     }
 
     interface LoDashImplicitObjectWrapper<T> {
         /**
          * @see _.set
          */
-        set<V>(
+        set<TResult>(
+            path: StringRepresentable|StringRepresentable[],
+            value: any
+        ): LoDashImplicitObjectWrapper<TResult>;
+
+        /**
+         * @see _.set
+         */
+        set<V, TResult>(
             path: StringRepresentable|StringRepresentable[],
             value: V
-        ): LoDashImplicitObjectWrapper<T>;
+        ): LoDashImplicitObjectWrapper<TResult>;
     }
 
     interface LoDashExplicitObjectWrapper<T> {
         /**
          * @see _.set
          */
-        set<V>(
+        set<TResult>(
+            path: StringRepresentable|StringRepresentable[],
+            value: any
+        ): LoDashExplicitObjectWrapper<TResult>;
+
+        /**
+         * @see _.set
+         */
+        set<V, TResult>(
             path: StringRepresentable|StringRepresentable[],
             value: V
-        ): LoDashExplicitObjectWrapper<T>;
+        ): LoDashExplicitObjectWrapper<TResult>;
     }
 
     //_.transform
diff --git a/lodash/lodash-tests-3.10.ts b/lodash/lodash-tests-3.10.ts
index 59f246172..a021f9ec3 100644
--- a/lodash/lodash-tests-3.10.ts
+++ b/lodash/lodash-tests-3.10.ts
@@ -8676,39 +8676,43 @@ module TestPick {
 
 // _.set
 module TestSet {
-    type SampleValue = {a: number; b: string; c: boolean;};
+    type SampleObject = {a: {}};
+    type SampleResult = {a: {b: number[]}};
 
-    let object: TResult;
-    let value = {a: 1, b: '', c: true};
+    let object: SampleObject;
+    let value: number;
 
     {
-        let result: TResult;
+        let result: SampleResult;
 
-        result = _.set(object, '', any);
-        result = _.set(object, ['a', 'b', 1], any);
+        result = _.set<SampleResult>(object, 'a.b[1]', value);
+        result = _.set<SampleResult>(object, ['a', 'b', 1], value);
 
-        result = _.set<SampleValue>(object, '', value);
-        result = _.set<SampleValue>(object, ['a', 'b', 1], value);
+        result = _.set<number, SampleResult>(object, 'a.b[1]', value);
+        result = _.set<number, SampleResult>(object, ['a', 'b', 1], value);
+
+        result = _.set<SampleObject, number, SampleResult>(object, 'a.b[1]', value);
+        result = _.set<SampleObject, number, SampleResult>(object, ['a', 'b', 1], value);
     }
 
     {
-        let result: _.LoDashImplicitObjectWrapper<TResult>;
+        let result: _.LoDashImplicitObjectWrapper<SampleResult>;
 
-        result = _(object).set('', any);
-        result = _(object).set(['a', 'b', 1], any);
+        result = _(object).set<SampleResult>('a.b[1]', value);
+        result = _(object).set<SampleResult>(['a', 'b', 1], value);
 
-        result = _(object).set<SampleValue>('', value);
-        result = _(object).set<SampleValue>(['a', 'b', 1], value);
+        result = _(object).set<number, SampleResult>('a.b[1]', value);
+        result = _(object).set<number, SampleResult>(['a', 'b', 1], value);
     }
 
     {
-        let result: _.LoDashExplicitObjectWrapper<TResult>;
+        let result: _.LoDashExplicitObjectWrapper<SampleResult>;
 
-        result = _(object).chain().set('', any);
-        result = _(object).chain().set(['a', 'b', 1], any);
+        result = _(object).chain().set<SampleResult>('a.b[1]', value);
+        result = _(object).chain().set<SampleResult>(['a', 'b', 1], value);
 
-        result = _(object).chain().set<SampleValue>('', value);
-        result = _(object).chain().set<SampleValue>(['a', 'b', 1], value);
+        result = _(object).chain().set<number, SampleResult>('a.b[1]', value);
+        result = _(object).chain().set<number, SampleResult>(['a', 'b', 1], value);
     }
 }
 
diff --git a/lodash/lodash-tests.ts b/lodash/lodash-tests.ts
index a7d3a72b8..c736deebf 100644
--- a/lodash/lodash-tests.ts
+++ b/lodash/lodash-tests.ts
@@ -8745,39 +8745,100 @@ module TestPickBy {
 
 // _.set
 module TestSet {
-    type SampleValue = {a: number; b: string; c: boolean;};
+    type SampleObject = {a: {}};
+    type SampleResult = {a: {b: number[]}};
 
-    let object: TResult;
-    let value = {a: 1, b: '', c: true};
+    let object: SampleObject;
+    let value: number;
 
     {
-        let result: TResult;
+        let result: SampleResult;
 
-        result = _.set(object, '', any);
-        result = _.set(object, ['a', 'b', 1], any);
+        result = _.set<SampleResult>(object, 'a.b[1]', value);
+        result = _.set<SampleResult>(object, ['a', 'b', 1], value);
 
-        result = _.set<SampleValue>(object, '', value);
-        result = _.set<SampleValue>(object, ['a', 'b', 1], value);
+        result = _.set<number, SampleResult>(object, 'a.b[1]', value);
+        result = _.set<number, SampleResult>(object, ['a', 'b', 1], value);
+
+        result = _.set<SampleObject, number, SampleResult>(object, 'a.b[1]', value);
+        result = _.set<SampleObject, number, SampleResult>(object, ['a', 'b', 1], value);
     }
 
     {
-        let result: _.LoDashImplicitObjectWrapper<TResult>;
+        let result: _.LoDashImplicitObjectWrapper<SampleResult>;
 
-        result = _(object).set('', any);
-        result = _(object).set(['a', 'b', 1], any);
+        result = _(object).set<SampleResult>('a.b[1]', value);
+        result = _(object).set<SampleResult>(['a', 'b', 1], value);
 
-        result = _(object).set<SampleValue>('', value);
-        result = _(object).set<SampleValue>(['a', 'b', 1], value);
+        result = _(object).set<number, SampleResult>('a.b[1]', value);
+        result = _(object).set<number, SampleResult>(['a', 'b', 1], value);
     }
 
     {
-        let result: _.LoDashExplicitObjectWrapper<TResult>;
+        let result: _.LoDashExplicitObjectWrapper<SampleResult>;
 
-        result = _(object).chain().set('', any);
-        result = _(object).chain().set(['a', 'b', 1], any);
+        result = _(object).chain().set<SampleResult>('a.b[1]', value);
+        result = _(object).chain().set<SampleResult>(['a', 'b', 1], value);
 
-        result = _(object).chain().set<SampleValue>('', value);
-        result = _(object).chain().set<SampleValue>(['a', 'b', 1], value);
+        result = _(object).chain().set<number, SampleResult>('a.b[1]', value);
+        result = _(object).chain().set<number, SampleResult>(['a', 'b', 1], value);
+    }
+}
+
+// _.setWith
+module TestSetWith {
+    type SampleObject = {a: {}};
+    type SampleResult = {a: {b: number[]}};
+
+    let object: SampleObject;
+    let value: number;
+    let customizer: (value: any, key: string, object: SampleObject) => number;
+
+    {
+        let result: SampleResult;
+
+        result = _.setWith<SampleResult>(object, 'a.b[1]', value);
+        result = _.setWith<SampleResult>(object, 'a.b[1]', value, customizer);
+        result = _.setWith<SampleResult>(object, ['a', 'b', 1], value);
+        result = _.setWith<SampleResult>(object, ['a', 'b', 1], value, customizer);
+
+        result = _.setWith<number, SampleResult>(object, 'a.b[1]', value);
+        result = _.setWith<number, SampleResult>(object, 'a.b[1]', value, customizer);
+        result = _.setWith<number, SampleResult>(object, ['a', 'b', 1], value);
+        result = _.setWith<number, SampleResult>(object, ['a', 'b', 1], value, customizer);
+
+        result = _.setWith<SampleObject, number, SampleResult>(object, 'a.b[1]', value);
+        result = _.setWith<SampleObject, number, SampleResult>(object, 'a.b[1]', value, customizer);
+        result = _.setWith<SampleObject, number, SampleResult>(object, ['a', 'b', 1], value);
+        result = _.setWith<SampleObject, number, SampleResult>(object, ['a', 'b', 1], value, customizer);
+    }
+
+    {
+        let result: _.LoDashImplicitObjectWrapper<SampleResult>;
+
+        result = _(object).setWith<SampleResult>('a.b[1]', value);
+        result = _(object).setWith<SampleResult>('a.b[1]', value, customizer);
+        result = _(object).setWith<SampleResult>(['a', 'b', 1], value);
+        result = _(object).setWith<SampleResult>(['a', 'b', 1], value, customizer);
+
+        result = _(object).setWith<number, SampleResult>('a.b[1]', value);
+        result = _(object).setWith<number, SampleResult>('a.b[1]', value, customizer);
+        result = _(object).setWith<number, SampleResult>(['a', 'b', 1], value);
+        result = _(object).setWith<number, SampleResult>(['a', 'b', 1], value, customizer);
+    }
+
+    {
+        let result: _.LoDashExplicitObjectWrapper<SampleResult>;
+
+        result = _(object).chain().setWith<SampleResult>('a.b[1]', value);
+        result = _(object).chain().setWith<SampleResult>('a.b[1]', value, customizer);
+        result = _(object).chain().setWith<SampleResult>(['a', 'b', 1], value);
+        result = _(object).chain().setWith<SampleResult>(['a', 'b', 1], value, customizer);
+
+        result = _(object).chain().setWith<number, SampleResult>('a.b[1]', value);
+        result = _(object).chain().setWith<number, SampleResult>('a.b[1]', value, customizer);
+        result = _(object).chain().setWith<number, SampleResult>(['a', 'b', 1], value);
+        result = _(object).chain().setWith<number, SampleResult>(['a', 'b', 1], value, customizer);
     }
 }
 
diff --git a/lodash/lodash.d.ts b/lodash/lodash.d.ts
index e5f938b54..e8d9d1d20 100644
--- a/lodash/lodash.d.ts
+++ b/lodash/lodash.d.ts
@@ -14578,47 +14578,159 @@ declare module _ {
     //_.set
     interface LoDashStatic {
         /**
-         * Sets the property value of path on object. If a portion of path does not exist it’s created.
+         * Sets the value at path of object. If a portion of path doesn’t exist it’s created. Arrays are created for
+         * missing index properties while objects are created for all other missing properties. Use _.setWith to
+         * customize path creation.
          *
-         * @param object The object to augment.
+         * @param object The object to modify.
          * @param path The path of the property to set.
          * @param value The value to set.
          * @return Returns object.
          */
-        set<T>(
-            object: T,
+        set<TResult>(
+            object: Object,
             path: StringRepresentable|StringRepresentable[],
             value: any
-        ): T;
+        ): TResult;
 
         /**
          * @see _.set
          */
-        set<V, T>(
-            object: T,
+        set<V, TResult>(
+            object: Object,
             path: StringRepresentable|StringRepresentable[],
             value: V
-        ): T;
+        ): TResult;
+
+        /**
+         * @see _.set
+         */
+        set<O, V, TResult>(
+            object: O,
+            path: StringRepresentable|StringRepresentable[],
+            value: V
+        ): TResult;
     }
 
     interface LoDashImplicitObjectWrapper<T> {
         /**
          * @see _.set
          */
-        set<V>(
+        set<TResult>(
+            path: StringRepresentable|StringRepresentable[],
+            value: any
+        ): LoDashImplicitObjectWrapper<TResult>;
+
+        /**
+         * @see _.set
+         */
+        set<V, TResult>(
             path: StringRepresentable|StringRepresentable[],
             value: V
-        ): LoDashImplicitObjectWrapper<T>;
+        ): LoDashImplicitObjectWrapper<TResult>;
     }
 
     interface LoDashExplicitObjectWrapper<T> {
         /**
          * @see _.set
          */
-        set<V>(
+        set<TResult>(
+            path: StringRepresentable|StringRepresentable[],
+            value: any
+        ): LoDashExplicitObjectWrapper<TResult>;
+
+        /**
+         * @see _.set
+         */
+        set<V, TResult>(
             path: StringRepresentable|StringRepresentable[],
             value: V
-        ): LoDashExplicitObjectWrapper<T>;
+        ): LoDashExplicitObjectWrapper<TResult>;
+    }
+
+    //_.setWith
+    interface SetWithCustomizer<T> {
+        (nsValue: any, key: string, nsObject: T): any;
+    }
+
+    interface LoDashStatic {
+        /**
+         * This method is like _.set except that it accepts customizer which is invoked to produce the objects of
+         * path. If customizer returns undefined path creation is handled by the method instead. The customizer is
+         * invoked with three arguments: (nsValue, key, nsObject).
+         *
+         * @param object The object to modify.
+         * @param path The path of the property to set.
+         * @param value The value to set.
+         * @parem customizer The function to customize assigned values.
+         * @return Returns object.
+         */
+        setWith<TResult>(
+            object: Object,
+            path: StringRepresentable|StringRepresentable[],
+            value: any,
+            customizer?: SetWithCustomizer<Object>
+        ): TResult;
+
+        /**
+         * @see _.setWith
+         */
+        setWith<V, TResult>(
+            object: Object,
+            path: StringRepresentable|StringRepresentable[],
+            value: V,
+            customizer?: SetWithCustomizer<Object>
+        ): TResult;
+
+        /**
+         * @see _.setWith
+         */
+        setWith<O, V, TResult>(
+            object: O,
+            path: StringRepresentable|StringRepresentable[],
+            value: V,
+            customizer?: SetWithCustomizer<O>
+        ): TResult;
+    }
+
+    interface LoDashImplicitObjectWrapper<T> {
+        /**
+         * @see _.setWith
+         */
+        setWith<TResult>(
+            path: StringRepresentable|StringRepresentable[],
+            value: any,
+            customizer?: SetWithCustomizer<T>
+        ): LoDashImplicitObjectWrapper<TResult>;
+
+        /**
+         * @see _.setWith
+         */
+        setWith<V, TResult>(
+            path: StringRepresentable|StringRepresentable[],
+            value: V,
+            customizer?: SetWithCustomizer<T>
+        ): LoDashImplicitObjectWrapper<TResult>;
+    }
+
+    interface LoDashExplicitObjectWrapper<T> {
+        /**
+         * @see _.setWith
+         */
+        setWith<TResult>(
+            path: StringRepresentable|StringRepresentable[],
+            value: any,
+            customizer?: SetWithCustomizer<T>
+        ): LoDashExplicitObjectWrapper<TResult>;
+
+        /**
+         * @see _.setWith
+         */
+        setWith<V, TResult>(
+            path: StringRepresentable|StringRepresentable[],
+            value: V,
+            customizer?: SetWithCustomizer<T>
+        ): LoDashExplicitObjectWrapper<TResult>;
     }
 
     //_.transform