diff --git a/.formatter.exs b/.formatter.exs
index 5799ac127..abd91dbbe 100644
--- a/.formatter.exs
+++ b/.formatter.exs
@@ -1,3 +1,3 @@
 [
-  inputs: ["mix.exs", "{config,lib,test}/**/*.{ex,exs}", "priv/repo/migrations/*.exs", "priv/scrubbers/*.ex"]
+  inputs: ["mix.exs", "{config,lib,test}/**/*.{ex,exs}", "priv/repo/migrations/*.exs", "priv/repo/optional_migrations/**/*.exs", "priv/scrubbers/*.ex"]
 ]