diff --git a/TestFlightConfig-Stock-S42-Revived/TestFlightConfig-Stock-S42-Revived-0.4.2.ckan b/TestFlightConfig-Stock-S42-Revived/TestFlightConfig-Stock-S42-Revived-0.4.2.ckan
index b0b90cc3c9..6faf640b53 100644
--- a/TestFlightConfig-Stock-S42-Revived/TestFlightConfig-Stock-S42-Revived-0.4.2.ckan
+++ b/TestFlightConfig-Stock-S42-Revived/TestFlightConfig-Stock-S42-Revived-0.4.2.ckan
@@ -1,5 +1,5 @@
 {
-    "spec_version": "v1.18",
+    "spec_version": "v1.4",
     "identifier": "TestFlightConfig-Stock-S42-Revived",
     "name": "TestFlight-Stock (TestFlight-Configs Revived): Even better than the official pack!",
     "abstract": "A small add-on adding TestFlight support for stock and modded parts, providing them success/failure chances (including engine reliability and ignition chance) and different failure modes depending on the engine type.",