diff --git a/src/main/resources/reference.conf b/src/main/resources/reference.conf
index 5b9a41ab7..69f9a8f5f 100644
--- a/src/main/resources/reference.conf
+++ b/src/main/resources/reference.conf
@@ -777,6 +777,7 @@ resourceTypes = {
         ]
       }
     }
+    allowLeaving = true
     reuseIds = true
   }
   notebook-cluster = {
@@ -1178,6 +1179,7 @@ resourceTypes = {
         ]
       }
     }
+    allowLeaving = true
     reuseIds = true
   }
   study = {