diff --git a/USI-SRV/USI-SRV-0.5.0.0.ckan b/USI-SRV/USI-SRV-0.5.0.0.ckan
index 20d9ae537c..7e0836cf46 100644
--- a/USI-SRV/USI-SRV-0.5.0.0.ckan
+++ b/USI-SRV/USI-SRV-0.5.0.0.ckan
@@ -30,6 +30,11 @@
             "min_version": "0.3.1"
         }
     ],
+    "conflicts": [
+        {
+            "name": "SETI-CommunityTechTree"
+        }
+    ],
     "install": [
         {
             "find": "UmbraSpaceIndustries/SrvPack",