diff --git a/ModuleRCSFX/ModuleRCSFX-v4.2.ckan b/ModuleRCSFX/ModuleRCSFX-v4.2.ckan
index 2f4bea6700..ecb0863ff4 100644
--- a/ModuleRCSFX/ModuleRCSFX-v4.2.ckan
+++ b/ModuleRCSFX/ModuleRCSFX-v4.2.ckan
@@ -14,7 +14,8 @@
         "repository": "https://github.com/NathanKell/ModuleRCSFX"
     },
     "version": "v4.2",
-    "ksp_version": "1.0",
+    "ksp_version_min": "1.0.0",
+    "ksp_version_max": "1.0.4",
     "download": "https://github.com/NathanKell/ModuleRCSFX/releases/download/v4.2/ModuleRCSFX_v4.2.zip",
     "download_size": 6915,
     "x_generated_by": "netkan"