diff --git a/README.md b/README.md
index f538855..3cb835b 100644
--- a/README.md
+++ b/README.md
@@ -15,7 +15,10 @@ git clone https://github.com/jerrykuku/luci-theme-argon.git
 make menuconfig #choose LUCI->Theme->Luci-theme-argon
 make -j1 V=s
 ```
-
+## Update log 20191109
+1. Minimal background file size.
+2. Automatically detect the number of background images.
+3. Delete unused image and file.
 
 ## Screenshots
 ![](/Screenshots/pc/screenshot1.png)
@@ -26,5 +29,7 @@ make -j1 V=s
 <img src="/Screenshots/phone/Screenshot_3.jpg" width="375" height="792">
 
 
+
+
 ## Thanks to 
 luci-theme-material: https://github.com/LuttyYang/luci-theme-material/