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diff --git a/date-fns/src/setMilliseconds/index.ts b/date-fns/src/setMilliseconds/index.ts
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+++ b/date-fns/src/setMilliseconds/index.ts
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+import toInteger from '../_lib/toInteger/index'
+import toDate from '../toDate/index'
+import requiredArgs from '../_lib/requiredArgs/index'
+
+/**
+ * @name setMilliseconds
+ * @category Millisecond Helpers
+ * @summary Set the milliseconds to the given date.
+ *
+ * @description
+ * Set the milliseconds to the given date.
+ *
+ * ### v2.0.0 breaking changes:
+ *
+ * - [Changes that are common for the whole library](https://github.com/date-fns/date-fns/blob/master/docs/upgradeGuide.md#Common-Changes).
+ *
+ * @param {Date|Number} date - the date to be changed
+ * @param {Number} milliseconds - the milliseconds of the new date
+ * @returns {Date} the new date with the milliseconds set
+ * @throws {TypeError} 2 arguments required
+ *
+ * @example
+ * // Set 300 milliseconds to 1 September 2014 11:30:40.500:
+ * const result = setMilliseconds(new Date(2014, 8, 1, 11, 30, 40, 500), 300)
+ * //=> Mon Sep 01 2014 11:30:40.300
+ */
+export default function setMilliseconds(dirtyDate: Date | number, dirtyMilliseconds: number): Date {
+  requiredArgs(2, arguments)
+
+  const date = toDate(dirtyDate)
+  const milliseconds = toInteger(dirtyMilliseconds)
+  date.setMilliseconds(milliseconds)
+  return date
+}