diff --git a/README.md b/README.md
index ec5e685..2692fdd 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-![Social preview](https://raw.githubusercontent.com/bowenliang123/dsh-context/main/docs/social-preview.png)
+<p align="center"><img src="https://raw.githubusercontent.com/bowenliang123/dsh-context/main/docs/social-preview.png" width="840" alt="Social preview"></p>
 
 # dsh-context
 
diff --git a/docs/social-preview.png b/docs/social-preview.png
index 7aecdcf..5afa919 100644
Binary files a/docs/social-preview.png and b/docs/social-preview.png differ