diff --git a/src/index.ts b/src/index.ts
index fba8502..115e86a 100755
--- a/src/index.ts
+++ b/src/index.ts
@@ -34,4 +34,29 @@ export {
   subMinutes,
   subYears,
   subSeconds,
+  add,
+  addDays,
+  addHours,
+  addWeeks,
+  addMonths,
+  addMinutes,
+  addYears,
+  addSeconds,
+  differenceInDays,
+  differenceInHours,
+  differenceInWeeks,
+  differenceInMonths,
+  differenceInMinutes,
+  differenceInYears,
+  differenceInSeconds,
+  differenceInMilliseconds,
+  differenceInCalendarDays,
+  differenceInCalendarISOWeeks,
+  differenceInCalendarMonths,
+  differenceInCalendarWeeks,
+  differenceInCalendarYears,
+  differenceInCalendarQuarters,
+  differenceInCalendarISOWeekYears,
+  differenceInQuarters,
+  differenceInISOWeekYears,
 } from 'date-fns'