diff --git a/SUMMARY.md b/SUMMARY.md
index aaa7f62..c7d6ebf 100644
--- a/SUMMARY.md
+++ b/SUMMARY.md
@@ -9,7 +9,10 @@
 - [python绘图-matplotlib](devops/matplotlib-start.pdf)
 - [水位预测代码修改](devops/water_level_prediction-modify.pdf)
 - [如何优雅的重启和恢复 es 集群中的节点 ](devops/es/es-restart&recovery.pdf)
-- [灰度发布](devops/canary.pdf)
+
+- [灰度发布：canary](devops/canary.pdf)
+- [灰度发布：前端预研](devops/_20210630__灰度发布_前端预研.pdf)
+
 - [如何搭建NFS服务 ](devops/nfs.pdf)
 - [sonar 部署和使用 ](devops/sonarqube.pdf)
 
diff --git a/devops/_20210630__灰度发布_前端预研.pdf b/devops/_20210630__灰度发布_前端预研.pdf
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index 0000000..35f8df8
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