diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7b13cb92f793..86d20a7ef5f1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,9 @@
   - Added `es.` namespace modules, `/es/` and `/stable/` namespaces entries
 - [Explicit Resource Management stage 3 proposal](https://github.com/tc39/proposal-explicit-resource-management)
   - Some minor updates like [explicit-resource-management/217](https://github.com/tc39/proposal-explicit-resource-management/pull/217)
+- Added [`Math.sumPrecise`](https://github.com/tc39/proposal-math-sum/) stage 2.7 proposal
+  - Built-ins:
+    - `Math.sumPrecise`
 - [`Promise.try`](https://github.com/tc39/proposal-promise-try):
   - Built-ins:
     - `Promise.try`
diff --git a/README.md b/README.md
index abcdfedb2305..8f047dcf86e2 100644
--- a/README.md
+++ b/README.md
@@ -164,6 +164,7 @@ structuredClone(new Set([1, 2, 3])); // => new Set([1, 2, 3])
       - [`Symbol.metadata` for decorators metadata proposal](#symbolmetadata-for-decorators-metadata-proposal)
     - [Stage 2.7 proposals](#stage-27-proposals)
       - [`Promise.try`](#promisetry)
+      - [`Math.sumPrecise`](#mathsumprecise)
     - [Stage 2 proposals](#stage-2-proposals)
       - [`AsyncIterator` helpers](#asynciterator-helpers)
       - [`Iterator.range`](#iteratorrange)
@@ -2525,6 +2526,24 @@ Promise.try(async () => 42).then(it => console.log(`Promise, resolved as ${it}`)
 Promise.try(async () => { throw 42; }).catch(it => console.log(`Promise, rejected as ${it}`));
 ```
 
+##### [`Math.sumPrecise`](https://github.com/tc39/proposal-math-sum)
+Module [`esnext.math.sum-precise`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/esnext.math.sum-precise.js)
+```js
+class Math {
+  static sumPrecise(items: Iterable<number>): Number;
+}
+```
+[*CommonJS entry points:*](#commonjs-api)
+```js
+core-js/proposals/math-sum
+core-js(-pure)/full/math/sum-precise
+```
+[*Examples*](https://tinyurl.com/2bd3nako):
+```js
+1e20 + 0.1 + -1e20; // => 0
+Math.sumPrecise([1e20, 0.1, -1e20]); // => 0.1
+```
+
 #### Stage 2 proposals[⬆](#index)
 [*CommonJS entry points:*](#commonjs-api)
 ```