diff --git a/maturin/__init__.py b/maturin/__init__.py
index 1f00e0b78..fef25b739 100644
--- a/maturin/__init__.py
+++ b/maturin/__init__.py
@@ -26,6 +26,7 @@
 available_options = [
     "bindings",
     "cargo-extra-args",
+    "compatibility",
     "manylinux",
     "rustc-extra-args",
     "skip-auditwheel",