diff --git a/CHANGELOG.md b/CHANGELOG.md
index 35b3b8a0f8..9052bd7374 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,25 @@
+<a name="1.0.0-alpha.31"></a>
+# [1.0.0-alpha.31](https://github.com/vuejs/vuepress/compare/v1.0.0-alpha.30...v1.0.0-alpha.31) (2019-01-10)
+
+
+### Bug Fixes
+
+* **$core:** Check if layout exists ([#1166](https://github.com/vuejs/vuepress/issues/1166)) ([38d1dea](https://github.com/vuejs/vuepress/commit/38d1dea))
+* **$core:** `NotFound` component doesn't work (close: [#1130](https://github.com/vuejs/vuepress/issues/1130)) ([b562972](https://github.com/vuejs/vuepress/commit/b562972))
+* **$core:** Mormalize override stylus file path in windows ([#1164](https://github.com/vuejs/vuepress/issues/1164)) ([9665196](https://github.com/vuejs/vuepress/commit/9665196))
+* **$core:** frontmatter attribute in `additionalPages` is ignored when combined with content (close: [#1157](https://github.com/vuejs/vuepress/issues/1157)) ([87894ff](https://github.com/vuejs/vuepress/commit/87894ff))
+* **$plugin-back-to-top:** use `$accent-color`. (close: [#1121](https://github.com/vuejs/vuepress/issues/1121)) ([#1122](https://github.com/vuejs/vuepress/issues/1122)) ([929da11](https://github.com/vuejs/vuepress/commit/929da11))
+* **$theme-default:** style is incompatible in low version iOS (<= iOS9) ([#1136](https://github.com/vuejs/vuepress/issues/1136)) ([f46de67](https://github.com/vuejs/vuepress/commit/f46de67))
+
+
+### Features
+
+* **$new-package:** standalone nprogress plugin ([25db1ba](https://github.com/vuejs/vuepress/commit/25db1ba))
+* **$plugin-google-analytics:** set `anonymizeIp` to true in order to be compliant with GDPR.([#1153](https://github.com/vuejs/vuepress/issues/1153)) ([122e024](https://github.com/vuejs/vuepress/commit/122e024))
+* **$theme-default:** semantic HTML (close: [#1154](https://github.com/vuejs/vuepress/issues/1154))([#1156](https://github.com/vuejs/vuepress/issues/1156)) ([ede57b0](https://github.com/vuejs/vuepress/commit/ede57b0))
+
+
+
 
 <a name="1.0.0-alpha.30"></a>
 # [1.0.0-alpha.30](https://github.com/vuejs/vuepress/compare/v1.0.0-alpha.29...v1.0.0-alpha.30) (2018-12-18)