diff --git a/packages/devkit/src/generators/format-files.ts b/packages/devkit/src/generators/format-files.ts
index 77f96d05c63c67..4f8d1bcd78ed9a 100644
--- a/packages/devkit/src/generators/format-files.ts
+++ b/packages/devkit/src/generators/format-files.ts
@@ -32,7 +32,7 @@ export async function formatFiles(tree: Tree): Promise<void> {
   await Promise.all(
     Array.from(files).map(async (file) => {
       const systemPath = path.join(tree.root, file.path);
-      let options: any = {
+      let options: Prettier.FileInfoOptions = {
         filepath: systemPath,
       };