diff --git a/compatibility/3.nom b/compatibility/3.nom
new file mode 100644
index 0000000..a83621b
--- /dev/null
+++ b/compatibility/3.nom
@@ -0,0 +1,11 @@
+#!/usr/bin/env nomsu -V3
+#
+    This file defines upgrades from Nomsu <=2 to Nomsu 3
+
+use "compatibility/compatibility.nom"
+
+upgrade action (method %spec %body) to "3" as (my action %spec %body)
+upgrade action (me) to "3" as (%me)
+upgrade action (@) to "3" as (%me)
+upgrade action (as % %) to "3" via (..)
+    [] -> (barf "Object API has changed. Use (%obj::action 1 2) instead of (as %obj: action 1 2)")