diff --git a/tools/config/update-configmap.sh b/tools/config/update-configmap.sh
index 8d7db0b..e6a5cfc 100644
--- a/tools/config/update-configmap.sh
+++ b/tools/config/update-configmap.sh
@@ -24,6 +24,7 @@ FLB_CONFIG="[SERVICE]
    Exclude_Path *.gz,*.zip
    Parser docker
    Mem_Buf_Limit 20MB
+   Buffer_Max_Size 1MB
 [FILTER]
    Name record_modifier
    Match *