diff --git a/.gitea/workflows/cd.yaml b/.gitea/workflows/cd.yaml
index ec3b3df6e..7f1771783 100644
--- a/.gitea/workflows/cd.yaml
+++ b/.gitea/workflows/cd.yaml
@@ -14,6 +14,11 @@ on:
     branches: [main]
   workflow_dispatch:
 
+# 2026-03-30 ogt: 佇列模式 - 等待前一個 run 完成，不取消
+concurrency:
+  group: cd-deploy-${{ github.ref }}
+  cancel-in-progress: false
+
 env:
   HARBOR: 192.168.0.110:5000
   # Harbor Proxy Cache (指向 DockerHub 的內部 Mirror，避免拉取限額)