diff --git a/.formatter.exs b/.formatter.exs
new file mode 100644
index 0000000000000000000000000000000000000000..2bed17cc0dfe5243834356d81d5e8b8ec4e0431c
--- /dev/null
+++ b/.formatter.exs
@@ -0,0 +1,3 @@
+[
+  inputs: ["mix.exs", "{config,lib,test}/**/*.{ex,exs}"]
+]