diff --git a/SimpleFuelSwitch/SimpleFuelSwitch-1.4.ckan b/SimpleFuelSwitch/SimpleFuelSwitch-1.4.ckan
index a30c2e443d..60214269e1 100644
--- a/SimpleFuelSwitch/SimpleFuelSwitch-1.4.ckan
+++ b/SimpleFuelSwitch/SimpleFuelSwitch-1.4.ckan
@@ -6,7 +6,7 @@
     "author": "Snark",
     "version": "1.4",
     "ksp_version_min": "1.8",
-    "ksp_version_max": "1.12.0",
+    "ksp_version_max": "1.12.3",
     "license": "CC-BY-NC-SA-4.0",
     "resources": {
         "homepage": "https://forum.kerbalspaceprogram.com/index.php?/topic/181274-16x-simplefuelswitch-v10-toggle-tanks-fuel-type-in-the-editor-simple-and-lightweight/",