diff --git a/KerbalXMod/KerbalXMod-0.1.2.ckan b/KerbalXMod/KerbalXMod-0.1.2.ckan
index 3c80e186aa..ea82356712 100644
--- a/KerbalXMod/KerbalXMod-0.1.2.ckan
+++ b/KerbalXMod/KerbalXMod-0.1.2.ckan
@@ -12,6 +12,7 @@
     },
     "version": "0.1.2",
     "ksp_version_min": "1.0",
+    "ksp_version_max": "1.3.1",
     "install": [
         {
             "file": "KerbalX",
diff --git a/KerbalXMod/KerbalXMod-0.1.3.ckan b/KerbalXMod/KerbalXMod-0.1.3.ckan
index 6af40a691e..77b01b3607 100644
--- a/KerbalXMod/KerbalXMod-0.1.3.ckan
+++ b/KerbalXMod/KerbalXMod-0.1.3.ckan
@@ -11,7 +11,8 @@
         "bugtracker": "https://github.com/Sujimichi/KerbalXMod/issues"
     },
     "version": "0.1.3",
-    "ksp_version_min": "1.0",
+    "ksp_version_min": "1.0.0",
+    "ksp_version_max": "1.3.1",
     "install": [
         {
             "file": "KerbalX",