diff --git a/CHANGELOG.md b/CHANGELOG.md
index d3596915a5e0..b097d25d5527 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 ##### Unreleased
 - Added Rhino 1.7.14 compat data
 - Added Deno 1.19 compat data mapping
+- Added iOS Safari 15.3 compat data mapping
 
 ##### 3.20.3 - 2022.01.15
 - Detects and replaces broken third-party `Function#bind` polyfills, uses only native `Function#bind` in the internals
diff --git a/packages/core-js-compat/src/mapping.mjs b/packages/core-js-compat/src/mapping.mjs
index 82b78b058e24..28ed609c6581 100644
--- a/packages/core-js-compat/src/mapping.mjs
+++ b/packages/core-js-compat/src/mapping.mjs
@@ -198,6 +198,7 @@ export default {
     ['15.0', '15.0'],
     ['15.1', '15.1'],
     ['15.2', '15.2'],
+    ['15.3', '15.3'],
   ],
   SafariToPhantom: [
     ['4.1', '1.9'],