diff --git a/_config.yml b/_config.yml
index 448758635..9a955a0c0 100644
--- a/_config.yml
+++ b/_config.yml
@@ -22,7 +22,7 @@ google_scholar_stats_use_cdn : true
 # Site Author
 author:
   name             : "Hanqing Yang"
-  avatar           : "images/hanqing_profile.jpeg"
+  avatar           : "images/hanqing_profile.png"
   bio              : "Zhejiang University"
   location         : "Hangzhou, China"
   employer         :