diff --git a/bucket/maven.json b/bucket/maven.json
index 47a3c8f236..c0969724ff 100644
--- a/bucket/maven.json
+++ b/bucket/maven.json
@@ -23,5 +23,8 @@
             "url": "$url.sha1"
         }
     },
-    "persist": "conf"
+    "persist": [
+        "conf",
+        "lib/ext"
+    ]
 }