diff --git a/beta/src/components/MDX/Sandpack/CustomPreset.tsx b/beta/src/components/MDX/Sandpack/CustomPreset.tsx
index 15ccb4de..bb0f1c67 100644
--- a/beta/src/components/MDX/Sandpack/CustomPreset.tsx
+++ b/beta/src/components/MDX/Sandpack/CustomPreset.tsx
@@ -21,7 +21,7 @@ import {CustomTheme} from './Themes';
 import {useSandpackLint} from './useSandpackLint';
 
 // Workaround for https://github.com/reactjs/reactjs.org/issues/4686#issuecomment-1137402613.
-const emptyArray = [];
+const emptyArray: Array<any> = [];
 
 export function CustomPreset({
   isSingleFile,