diff --git a/en/TOC.md b/en/TOC.md
index 2eb1ef6d30..522c938837 100644
--- a/en/TOC.md
+++ b/en/TOC.md
@@ -103,6 +103,7 @@
 + [TiDB Operator Roadmap](roadmap.md)
 + Release Notes
   + v1.2
+    - [1.2.1](releases/release-1.2.1.md)
     - [1.2 GA](releases/release-1.2.0.md)
     - [1.2.0-rc.2](releases/release-1.2.0-rc.2.md)
     - [1.2.0-rc.1](releases/release-1.2.0-rc.1.md)
diff --git a/en/releases/release-1.2.1.md b/en/releases/release-1.2.1.md
new file mode 100644
index 0000000000..21df747895
--- /dev/null
+++ b/en/releases/release-1.2.1.md
@@ -0,0 +1,17 @@
+---
+title: TiDB Operator 1.2.1 Release Notes
+---
+
+# TiDB Operator 1.2.1 Release Notes
+
+Release date: August 18, 2021
+
+TiDB Operator version: 1.2.1
+
+## Rolling update changes
+
+- If [`hostNetwork`](../configure-a-tidb-cluster.md#hostnetwork) is enabled for TiCDC, upgrading TiDB Operator will cause the recreation of the TiCDC Pod due to [#4141](https://github.com/pingcap/tidb-operator/pull/4141)
+
+## Improvements
+
+- Support configuring [`hostNetwork`](../configure-a-tidb-cluster.md#hostnetwork) for all components in TidbCluster so that all components can use host network ([#4141](https://github.com/pingcap/tidb-operator/pull/4141), [@DanielZhangQD](https://github.com/DanielZhangQD))
diff --git a/zh/TOC.md b/zh/TOC.md
index 375673fd81..c7fdfd2010 100644
--- a/zh/TOC.md
+++ b/zh/TOC.md
@@ -104,6 +104,7 @@
 + [TiDB Operator Roadmap](roadmap.md)
 + 版本发布历史
   + v1.2
+    - [1.2.1](releases/release-1.2.1.md)
     - [1.2 GA](releases/release-1.2.0.md)
     - [1.2.0-rc.2](releases/release-1.2.0-rc.2.md)
     - [1.2.0-rc.1](releases/release-1.2.0-rc.1.md)
diff --git a/zh/releases/release-1.2.1.md b/zh/releases/release-1.2.1.md
new file mode 100644
index 0000000000..65abf1e868
--- /dev/null
+++ b/zh/releases/release-1.2.1.md
@@ -0,0 +1,17 @@
+---
+title: TiDB Operator 1.2.1 Release Notes
+---
+
+# TiDB Operator 1.2.1 Release Notes
+
+发布日期：2021 年 8 月 18 日
+
+TiDB Operator 版本：1.2.1
+
+## 滚动升级改动
+
+- 由于 [#4141](https://github.com/pingcap/tidb-operator/pull/4141) 的改动，如果你部署 TiCDC 时配置了 [`hostNetwork`](../configure-a-tidb-cluster.md#hostnetwork) 为 `true`，那么升级 TiDB Operator 后会导致 TiCDC Pod 删除重建
+
+## 优化提升
+
+- 支持为 TidbCluster 的所有组件配置 [`hostNetwork`](../configure-a-tidb-cluster.md#hostnetwork)，使所有组件都可以使用宿主机网络 ([#4141](https://github.com/pingcap/tidb-operator/pull/4141), [@DanielZhangQD](https://github.com/DanielZhangQD))