diff --git a/package.json b/package.json
index 9f4eb42..9a63bf8 100644
--- a/package.json
+++ b/package.json
@@ -7,5 +7,8 @@
   { "type" : "git",
     "url" : "http://github.com/creationix/step.git"
   },
-  "main": "lib/step"
+  "main": "lib/step",
+  "spm": {
+    "main": "lib/step"
+  }
 }