diff --git a/assets/img/avatar.png b/assets/img/avatar.png
new file mode 100644
index 0000000..a38a5e5
Binary files /dev/null and b/assets/img/avatar.png differ
diff --git a/config/_default/params.yml b/config/_default/params.yml
index d1010d3..ff2a05e 100644
--- a/config/_default/params.yml
+++ b/config/_default/params.yml
@@ -18,7 +18,7 @@ sidebar:
   avatar:
     enabled: true
     local: true
-    src: img/avatar.jpg
+    src: img/avatar.png
 
 article:
   math: false