diff --git a/README.md b/README.md
index 78f919a..14eba6d 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,12 @@
 ##「壁上观」是一个Material Design知乎日报阅读app
 ### [Google play](https://play.google.com/store/apps/details?id=com.tneciv.zhihudaily "Google play")
 
----
+### 历史版本：
+
+* [3.31] (https://raw.githubusercontent.com/Tneciv/ZhihuDaily/dev/apk/com.tneciv.zhihudaily-3.31-20160218.apk)
+* [3.2] (https://raw.githubusercontent.com/Tneciv/ZhihuDaily/dev/apk/com.tneciv.zhihudaily-3.2-20160212.apk)
+
+### 应用截图
 ![](https://github.com/Tneciv/ZhihuDaily/raw/dev/screenshots/nav.png)
 ![](https://github.com/Tneciv/ZhihuDaily/raw/dev/screenshots/detail.png)
 ![](https://github.com/Tneciv/ZhihuDaily/raw/dev/screenshots/home.png)