diff --git a/config.example.yaml b/config.example.yaml
index d159868..dab3ed7 100644
--- a/config.example.yaml
+++ b/config.example.yaml
@@ -21,6 +21,7 @@ observability:
     max_batch_entries: 512
     export_timeout: 30s
     max_queue_size: 2048
+    sampling_rate: 0.2
   metric:
     reader:
       type: prometheus