diff --git a/config.example.yml b/config.example.yml
index 523afe6cf..4bf749303 100644
--- a/config.example.yml
+++ b/config.example.yml
@@ -47,4 +47,4 @@ limits:
   # time limit per instance in seconds
   time: 900
   # memory limit per instance in kilobytes
-  memory: 8000000
+  memory: 9216000 # 8192 MB memory limit + 1024 MB tolerance margin