diff --git a/JSat/JSat-1.8.1.2.ckan b/JSat/JSat-1.8.1.2.ckan
index 2a9385652a..b23f8015e0 100644
--- a/JSat/JSat-1.8.1.2.ckan
+++ b/JSat/JSat-1.8.1.2.ckan
@@ -16,6 +16,11 @@
         "parts",
         "uncrewed"
     ],
+    "depends": [
+        {
+            "name": "ModuleManager"
+        }
+    ],
     "suggests": [
         {
             "name": "B9PartSwitch"