diff --git a/registry/ormolu.toml b/registry/ormolu.toml
new file mode 100644
index 0000000000..c1278cf305
--- /dev/null
+++ b/registry/ormolu.toml
@@ -0,0 +1,3 @@
+backends = ["github:tweag/ormolu"]
+description = "A formatter for Haskell source code"
+test = { cmd = "ormolu --version", expected = "ormolu {{version}}" }