diff --git a/TweakscaleUnlimited/TweakscaleUnlimited-1.0.ckan b/TweakscaleUnlimited/TweakscaleUnlimited-1.0.ckan
index dc6bbd9c93..8013f3944f 100644
--- a/TweakscaleUnlimited/TweakscaleUnlimited-1.0.ckan
+++ b/TweakscaleUnlimited/TweakscaleUnlimited-1.0.ckan
@@ -1,5 +1,5 @@
 {
-    "spec_version": "v1.18",
+    "spec_version": "v1.4",
     "identifier": "TweakscaleUnlimited",
     "name": "Tweakscale Unlimited",
     "abstract": "A mod that allows parts to be scaled up to 1km & 25600% size using Tweakscale.",