diff --git a/testing/scenarios/data/test_4_server.json b/testing/scenarios/data/test_4_server.json
index 2f1f38b7..b71b7852 100644
--- a/testing/scenarios/data/test_4_server.json
+++ b/testing/scenarios/data/test_4_server.json
@@ -40,7 +40,7 @@
       },
       "allocate": {
         "strategy": "random",
-        "concurrency": 3,
+        "concurrency": 2,
         "refresh": 5
       }
     }