diff --git a/kOS/kOS-1-1.2.1.0.ckan b/kOS/kOS-1-1.2.1.0.ckan
index 7a40b3abfc..dd67468fd5 100644
--- a/kOS/kOS-1-1.2.1.0.ckan
+++ b/kOS/kOS-1-1.2.1.0.ckan
@@ -6,7 +6,7 @@
     "author": "many KSP-KOS contributers, currently dunbaratu and hvacengi",
     "version": "1:1.2.1.0",
     "ksp_version_min": "1.8.0",
-    "ksp_version_max": "1.8.99",
+    "ksp_version_max": "1.9.1",
     "license": "GPL-3.0",
     "release_status": "stable",
     "resources": {