diff --git a/libs/ts-standard/src/index.ts b/libs/ts-standard/src/index.ts
index cc6158e..c520e84 100644
--- a/libs/ts-standard/src/index.ts
+++ b/libs/ts-standard/src/index.ts
@@ -4,5 +4,5 @@
  * @module ts-standard
  */
 
-export { isNonNullable } from './filter';
+export { isNonNullable, isNonNullableKeys } from './filter';
 export type { NonNullableKeys, Nullable, Opt } from './type';