diff --git a/ThunderbirdsInterKerbinRescue/ThunderbirdsInterKerbinRescue-1.0.0.ckan b/ThunderbirdsInterKerbinRescue/ThunderbirdsInterKerbinRescue-1.0.0.ckan
index a5c9ea984d..8c7b9f9406 100644
--- a/ThunderbirdsInterKerbinRescue/ThunderbirdsInterKerbinRescue-1.0.0.ckan
+++ b/ThunderbirdsInterKerbinRescue/ThunderbirdsInterKerbinRescue-1.0.0.ckan
@@ -1,5 +1,5 @@
 {
-    "spec_version": "v1.18",
+    "spec_version": "v1.4",
     "identifier": "ThunderbirdsInterKerbinRescue",
     "name": "Thunderbirds InterKerbin Rescue",
     "abstract": "Craft from the classic Thunderbirds series",