diff --git a/leapYears/leapYears.js b/leapYears/leapYears.js
index ac786a2..bb2f54d 100644
--- a/leapYears/leapYears.js
+++ b/leapYears/leapYears.js
@@ -1,5 +1,5 @@
-const leapYears = function() {
-
+const leapYears = function(year) {
+    return year % 4 === 0 && (year % 100 !==0 || year % 400 ===0)
 }
 
 module.exports = leapYears