diff --git a/ExtraMoon/ExtraMoon-1.12.4.ckan b/ExtraMoon/ExtraMoon-1.12.4.ckan
index 3977a919f3..9114487ecb 100644
--- a/ExtraMoon/ExtraMoon-1.12.4.ckan
+++ b/ExtraMoon/ExtraMoon-1.12.4.ckan
@@ -1,5 +1,5 @@
 {
-    "spec_version": "v1.18",
+    "spec_version": "v1.4",
     "identifier": "ExtraMoon",
     "name": "Extra Moon",
     "abstract": "A new moon for Kerbin in a retrograde orbit beyond Minmus.",