diff --git a/java/ql/lib/ext/empty.model.yml b/java/ql/lib/ext/empty.model.yml
index 43028e7cc14..a0ea3cf753b 100644
--- a/java/ql/lib/ext/empty.model.yml
+++ b/java/ql/lib/ext/empty.model.yml
@@ -13,6 +13,14 @@ extensions:
       pack: codeql/java-all
       extensible: summaryModel
     data: []
+  - addsTo:
+      pack: codeql/java-all
+      extensible: barrierModel
+    data: []
+  - addsTo:
+      pack: codeql/java-all
+      extensible: barrierGuardModel
+    data: []
   - addsTo:
       pack: codeql/java-all
       extensible: neutralModel