diff --git a/src/index.ts b/src/index.ts
index 136c82ab0..fe9b9c402 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -2,6 +2,7 @@ import 'core-js/es/string/starts-with';
 import 'core-js/es/array/from';
 import 'core-js/es/typed-array/slice';
 import 'core-js/es/array/includes';
+import 'core-js/es/string/includes';
 import 'promise-polyfill/src/polyfill';
 import 'fast-text-encoding';