diff --git a/GravityTurnContinued/GravityTurnContinued-2-1.7.7.ckan b/GravityTurnContinued/GravityTurnContinued-2-1.7.7.ckan
index d2d298ce41..2c4a155cea 100644
--- a/GravityTurnContinued/GravityTurnContinued-2-1.7.7.ckan
+++ b/GravityTurnContinued/GravityTurnContinued-2-1.7.7.ckan
@@ -13,7 +13,8 @@
         "repository": "https://github.com/AndyMt/GravityTurn/"
     },
     "version": "2:1.7.7",
-    "ksp_version": "1.4",
+    "ksp_version_min": "1.3",
+    "ksp_version_max": "1.6",
     "conflicts": [
         {
             "name": "GravityTurn"