diff --git a/src/lib/es2020.intl.d.ts b/src/lib/es2020.intl.d.ts
index f351ee3c0cee6..f0938eca850f9 100644
--- a/src/lib/es2020.intl.d.ts
+++ b/src/lib/es2020.intl.d.ts
@@ -200,7 +200,7 @@ declare namespace Intl {
     interface NumberFormatOptions {
         compactDisplay?: "short" | "long" | undefined;
         notation?: "standard" | "scientific" | "engineering" | "compact" | undefined;
-        signDisplay?: "auto" | "never" | "always" | undefined;
+        signDisplay?: "auto" | "never" | "always" | "exceptZero" | undefined;
         unit?: string | undefined;
         unitDisplay?: "short" | "long" | "narrow" | undefined;
     }
@@ -208,7 +208,7 @@ declare namespace Intl {
     interface ResolvedNumberFormatOptions {
         compactDisplay?: "short" | "long";
         notation?: "standard" | "scientific" | "engineering" | "compact";
-        signDisplay?: "auto" | "never" | "always";
+        signDisplay?: "auto" | "never" | "always" | "exceptZero";
         unit?: string;
         unitDisplay?: "short" | "long" | "narrow";
     }