diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0d99bc1..c89558b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 6.6.5
+
+* Fixed type for `option` regressed in v6.6.2.
+
 ## 6.6.4
 
 * Fixed style regression introduced by v6.6.3.
diff --git a/README.md b/README.md
index ee6f16e..298bec2 100644
--- a/README.md
+++ b/README.md
@@ -237,7 +237,7 @@ Drop `<script>` inside your HTML file and access the component via `window.VueEC
 ```html
 <script src="https://cdn.jsdelivr.net/npm/vue@3.3.7"></script>
 <script src="https://cdn.jsdelivr.net/npm/echarts@5.4.3"></script>
-<script src="https://cdn.jsdelivr.net/npm/vue-echarts@6.6.4"></script>
+<script src="https://cdn.jsdelivr.net/npm/vue-echarts@6.6.5"></script>
 ```
 <!-- vue3Scripts:end -->
 
@@ -257,7 +257,7 @@ app.component('v-chart', VueECharts)
 ```html
 <script src="https://cdn.jsdelivr.net/npm/vue@2.7.15"></script>
 <script src="https://cdn.jsdelivr.net/npm/echarts@5.4.3"></script>
-<script src="https://cdn.jsdelivr.net/npm/vue-echarts@6.6.4"></script>
+<script src="https://cdn.jsdelivr.net/npm/vue-echarts@6.6.5"></script>
 ```
 <!-- vue2Scripts:end -->
 
diff --git a/README.zh-Hans.md b/README.zh-Hans.md
index d53c669..b131020 100644
--- a/README.zh-Hans.md
+++ b/README.zh-Hans.md
@@ -237,7 +237,7 @@ import "echarts";
 ```html
 <script src="https://cdn.jsdelivr.net/npm/vue@3.3.7"></script>
 <script src="https://cdn.jsdelivr.net/npm/echarts@5.4.3"></script>
-<script src="https://cdn.jsdelivr.net/npm/vue-echarts@6.6.4"></script>
+<script src="https://cdn.jsdelivr.net/npm/vue-echarts@6.6.5"></script>
 ```
 <!-- vue3Scripts:end -->
 
@@ -257,7 +257,7 @@ app.component('v-chart', VueECharts)
 ```html
 <script src="https://cdn.jsdelivr.net/npm/vue@2.7.15"></script>
 <script src="https://cdn.jsdelivr.net/npm/echarts@5.4.3"></script>
-<script src="https://cdn.jsdelivr.net/npm/vue-echarts@6.6.4"></script>
+<script src="https://cdn.jsdelivr.net/npm/vue-echarts@6.6.5"></script>
 ```
 <!-- vue2Scripts:end -->
 
diff --git a/package.json b/package.json
index 0d6bf11..2eb7439 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "vue-echarts",
-  "version": "6.6.4",
+  "version": "6.6.5",
   "description": "Vue.js component for Apache ECharts.",
   "author": "GU Yiling <justice360@gmail.com>",
   "scripts": {