diff --git a/RP1TechTreeKompacted/RP1TechTreeKompacted-1.3.ckan b/RP1TechTreeKompacted/RP1TechTreeKompacted-1.3.ckan
index 5a8548afbb..fa1135a52e 100644
--- a/RP1TechTreeKompacted/RP1TechTreeKompacted-1.3.ckan
+++ b/RP1TechTreeKompacted/RP1TechTreeKompacted-1.3.ckan
@@ -1,5 +1,5 @@
 {
-    "spec_version": "v1.18",
+    "spec_version": "v1.4",
     "identifier": "RP1TechTreeKompacted",
     "name": "RP-1 TechTree Kompacted",
     "abstract": "An alternative layout for the RP-1 Tech Tree",