diff --git a/OPTUSILifeSupportPatch/OPTUSILifeSupportPatch-1.3.1.ckan b/OPTUSILifeSupportPatch/OPTUSILifeSupportPatch-1.3.1.ckan
index b9ca24235f..9ed8d4d2ce 100644
--- a/OPTUSILifeSupportPatch/OPTUSILifeSupportPatch-1.3.1.ckan
+++ b/OPTUSILifeSupportPatch/OPTUSILifeSupportPatch-1.3.1.ckan
@@ -5,7 +5,8 @@
     "abstract": "(( KSP 1.3.1 only )) Adds USI modules and LS resource switching directly to OPT cockpits, cabins, hollow parts and cargo bays",
     "author": "JadeOfMaar",
     "version": "1.3.1",
-    "ksp_version": "1.3.1",
+    "ksp_version_min": "1.2.2",
+    "ksp_version_max": "1.3.9",
     "license": "MIT",
     "resources": {
         "homepage": "https://forum.kerbalspaceprogram.com/index.php?/topic/161897-122-13-opt_usi-v110/",