diff --git a/SinkEmAll/SinkEmAll-3.1.ckan b/SinkEmAll/SinkEmAll-3.1.ckan
index 59c0795032..4361a88070 100644
--- a/SinkEmAll/SinkEmAll-3.1.ckan
+++ b/SinkEmAll/SinkEmAll-3.1.ckan
@@ -5,7 +5,7 @@
     "abstract": "Ballast control and Ballast added to stock parts to allow underwater exploration. ",
     "author": "Jatwaa",
     "version": "3.1",
-    "ksp_version": "1.8.1",
+    "ksp_version": "1.9.1",
     "license": "MIT",
     "resources": {
         "homepage": "https://forum.kerbalspaceprogram.com/index.php?/topic/170919-131-jdsa-flighttech/&tab=comments#comment-3295292",