diff --git a/packages/vant/docs/markdown/changelog.zh-CN-v4.md b/packages/vant/docs/markdown/changelog-v4.zh-CN.md
similarity index 81%
rename from packages/vant/docs/markdown/changelog.zh-CN-v4.md
rename to packages/vant/docs/markdown/changelog-v4.zh-CN.md
index 71785717e..833675d62 100644
--- a/packages/vant/docs/markdown/changelog.zh-CN-v4.md
+++ b/packages/vant/docs/markdown/changelog-v4.zh-CN.md
@@ -21,3 +21,4 @@
 其他：
 
 - Button: 默认圆角大小从 `2px` 调整为 `4px`
+- Button: 默认按钮的边框颜色调整为 `--van-gray-6`
diff --git a/packages/vant/src/button/README.md b/packages/vant/src/button/README.md
index fd7ae7088..2dfa99e7c 100644
--- a/packages/vant/src/button/README.md
+++ b/packages/vant/src/button/README.md
@@ -185,7 +185,7 @@ The component provides the following CSS variables, which can be used to customi
 | --van-button-default-font-size | _var(--van-font-size-lg)_ | - |
 | --van-button-default-color | _var(--van-text-color)_ | - |
 | --van-button-default-background | _var(--van-background-light)_ | - |
-| --van-button-default-border-color | _var(--van-border-color)_ | - |
+| --van-button-default-border-color | _var(--van-gray-6)_ | - |
 | --van-button-primary-color | _var(--van-white)_ | - |
 | --van-button-primary-background | _var(--van-primary-color)_ | - |
 | --van-button-primary-border-color | _var(--van-primary-color)_ | - |
diff --git a/packages/vant/src/button/README.zh-CN.md b/packages/vant/src/button/README.zh-CN.md
index 7e0cc1e1e..44905edaa 100644
--- a/packages/vant/src/button/README.zh-CN.md
+++ b/packages/vant/src/button/README.zh-CN.md
@@ -208,7 +208,7 @@ import type {
 | --van-button-default-font-size    | _var(--van-font-size-lg)_     | -    |
 | --van-button-default-color        | _var(--van-text-color)_       | -    |
 | --van-button-default-background   | _var(--van-background-light)_ | -    |
-| --van-button-default-border-color | _var(--van-border-color)_     | -    |
+| --van-button-default-border-color | _var(--van-gray-6)_           | -    |
 | --van-button-primary-color        | _var(--van-white)_            | -    |
 | --van-button-primary-background   | _var(--van-primary-color)_    | -    |
 | --van-button-primary-border-color | _var(--van-primary-color)_    | -    |
diff --git a/packages/vant/src/button/index.less b/packages/vant/src/button/index.less
index c1b8c98c5..8b70db0bf 100644
--- a/packages/vant/src/button/index.less
+++ b/packages/vant/src/button/index.less
@@ -13,7 +13,7 @@
   --van-button-default-font-size: var(--van-font-size-lg);
   --van-button-default-color: var(--van-text-color);
   --van-button-default-background: var(--van-background-light);
-  --van-button-default-border-color: var(--van-border-color);
+  --van-button-default-border-color: var(--van-gray-6);
   --van-button-primary-color: var(--van-white);
   --van-button-primary-background: var(--van-primary-color);
   --van-button-primary-border-color: var(--van-primary-color);