diff --git a/CHANGELOG.md b/CHANGELOG.md
index 160a42e..be8a96e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,4 +10,5 @@
 ## Version 1.3
 - Added `equals` method to `BaseCollection` class.
 - Added `sum` method to `BaseCollection` class.
+- Added `fill` method to `BaseCollection` class.
 - Replaced `is_a` native function by `instanceof` operator.
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