diff --git a/PersistentRotation/PersistentRotation-1.8.4.ckan b/PersistentRotation/PersistentRotation-1.8.4.ckan
index 664db13614..cfe23431f3 100644
--- a/PersistentRotation/PersistentRotation-1.8.4.ckan
+++ b/PersistentRotation/PersistentRotation-1.8.4.ckan
@@ -12,7 +12,8 @@
         "x_screenshot": "https://spacedock.info/content/MarkusA380_985/PersistentRotation/PersistentRotation-1459174738.8231518.jpg"
     },
     "version": "1.8.4",
-    "ksp_version": "1.2.2",
+    "ksp_version_min": "1.2.2",
+    "ksp_version_max": "1.3.1",
     "suggests": [
         {
             "name": "Toolbar"