diff --git a/packages/ckeditor5-keyboard-marker/tsconfig.json b/packages/ckeditor5-keyboard-marker/tsconfig.json
index 069e3cb16..015853699 100644
--- a/packages/ckeditor5-keyboard-marker/tsconfig.json
+++ b/packages/ckeditor5-keyboard-marker/tsconfig.json
@@ -18,6 +18,7 @@
     "noImplicitAny": true,
     "noImplicitOverride": true,
     "strict": true,
+	"composite": true,
     "target": "es2019",
     "sourceMap": true,
     "allowJs": true,