diff --git a/src/lib/es2020.intl.d.ts b/src/lib/es2020.intl.d.ts
index 225e060f60b68..caca1a399ee17 100644
--- a/src/lib/es2020.intl.d.ts
+++ b/src/lib/es2020.intl.d.ts
@@ -277,4 +277,21 @@ declare namespace Intl {
         unit?: string;
         unitDisplay?: string;
     }
+
+    interface DateTimeFormatOptions {
+        localeMatcher?: string;
+        weekday?: string;
+        era?: string;
+        year?: string;
+        month?: string;
+        day?: string;
+        hour?: string;
+        minute?: string;
+        second?: string;
+        timeZoneName?: string;
+        formatMatcher?: string;
+        hour12?: boolean;
+        timeZone?: string;
+        dateStyle?: string;
+    }
 }
diff --git a/tests/lib/lib.d.ts b/tests/lib/lib.d.ts
index a60f138647178..92b7bb73ed53f 100644
--- a/tests/lib/lib.d.ts
+++ b/tests/lib/lib.d.ts
@@ -3968,6 +3968,7 @@ declare module Intl {
         minute?: string;
         second?: string;
         timeZoneName?: string;
+        dateStyle?: string;
     }
 
     interface DateTimeFormat {