diff --git a/CHANGELOG.md b/CHANGELOG.md
index e6c86c3347b2..c2f97e184cd2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 ##### Unreleased
 - Added a workaround of a Closure Compiler unsafe optimization, [#972](https://github.com/zloirock/core-js/issues/972)
 - One more fix crashing of `Object.create(null)` on WSH, [#970](https://github.com/zloirock/core-js/issues/970)
+- Added Deno 1.14 compat data mapping
 
 ##### 3.16.1 - 2021.08.09
 - Fixed microtask implementation on iOS Pebble, [#967](https://github.com/zloirock/core-js/issues/967)
diff --git a/packages/core-js-compat/src/mapping.mjs b/packages/core-js-compat/src/mapping.mjs
index e4ab0420d36a..a55a93a2b56d 100644
--- a/packages/core-js-compat/src/mapping.mjs
+++ b/packages/core-js-compat/src/mapping.mjs
@@ -71,6 +71,7 @@ export default {
     [91, '1.9'],
     [92, '1.12'],
     [93, '1.13'],
+    [94, '1.14'],
   ],
   // https://github.com/mdn/browser-compat-data/blob/main/browsers/samsunginternet_android.json
   ChromeToSamsung: [
diff --git a/scripts/check-compat-data-mapping.mjs b/scripts/check-compat-data-mapping.mjs
index 84f49f02d131..4c4de1fafa79 100644
--- a/scripts/check-compat-data-mapping.mjs
+++ b/scripts/check-compat-data-mapping.mjs
@@ -10,10 +10,10 @@ async function getJSON(path) {
   return result.json();
 }
 
-async function latestMDN(name) {
+async function latestMDN(name, branch = 'mdn/browser-compat-data/main') {
   const {
     browsers: { [name]: { releases } },
-  } = await getJSON(`https://raw.githubusercontent.com/mdn/browser-compat-data/main/browsers/${ name }.json`);
+  } = await getJSON(`https://raw.githubusercontent.com/${ branch }/browsers/${ name }.json`);
   const version = Object.keys(releases).reduce((a, b) => {
     return releases[b].engine_version && cmp(coerce(b), '>', coerce(a)) ? b : a;
   });
@@ -40,8 +40,8 @@ const [{ v8 }] = await getJSON('https://nodejs.org/dist/index.json');
 assert(modernV8ToChrome(v8) <= latest(mapping.ChromeToNode)[0], 'NodeJS');
 
 // wait for https://github.com/mdn/browser-compat-data/pull/10753
-// const deno = await latestMDN('deno');
-// assert(modernV8ToChrome(deno.engine) <= latest(mapping.ChromeToDeno)[0], 'Opera Mobile');
+const deno = await latestMDN('deno', 'lucacasonato/browser-compat-data/deno');
+assert(modernV8ToChrome(deno.engine) <= latest(mapping.ChromeToDeno)[0], 'Deno');
 
 const samsung = await latestMDN('samsunginternet_android');
 assert(samsung.engine <= latest(mapping.ChromeToSamsung)[0], 'Samsung Internet');