diff --git a/packages/vant/docs/markdown/changelog.en-US.md b/packages/vant/docs/markdown/changelog.en-US.md
index e653fae04..2bc2a40b8 100644
--- a/packages/vant/docs/markdown/changelog.en-US.md
+++ b/packages/vant/docs/markdown/changelog.en-US.md
@@ -19,6 +19,18 @@ Vant follows [Semantic Versioning 2.0.0](https://semver.org/lang/zh-CN/).
 
 ## Details
 
+### [v3.6.12](https://github.com/vant-ui/vant/compare/v3.6.11...v3.6.12)
+
+`2023-07-20`
+
+**Feature**
+
+- Uploader: support avif image format [#11655](https://github.com/vant-ui/vant/issues/11655)
+
+**Bug Fixes**
+
+- Uploader: render objectUrl to avoid perf issue [#12106](https://github.com/vant-ui/vant/issues/12106)
+
 ### [v3.6.11](https://github.com/vant-ui/vant/compare/v3.6.10...v3.6.11)
 
 `2022-12-25`
diff --git a/packages/vant/docs/markdown/changelog.zh-CN.md b/packages/vant/docs/markdown/changelog.zh-CN.md
index 1f5cea7f8..29c6ee717 100644
--- a/packages/vant/docs/markdown/changelog.zh-CN.md
+++ b/packages/vant/docs/markdown/changelog.zh-CN.md
@@ -19,6 +19,18 @@ Vant 遵循 [Semver](https://semver.org/lang/zh-CN/) 语义化版本规范。
 
 ## 更新内容
 
+### [v3.6.12](https://github.com/vant-ui/vant/compare/v3.6.11...v3.6.12)
+
+`2023-07-20`
+
+**Feature**
+
+- Uploader: 支持 avif 格式 [#11655](https://github.com/vant-ui/vant/issues/11655)
+
+**Bug Fixes**
+
+- Uploader: 修复性能问题 [#12106](https://github.com/vant-ui/vant/issues/12106)
+
 ### [v3.6.11](https://github.com/vant-ui/vant/compare/v3.6.10...v3.6.11)
 
 `2022-12-25`