diff --git a/app/decorators/user_decorator.rb b/app/decorators/user_decorator.rb
index e497814..08ed8fa 100644
--- a/app/decorators/user_decorator.rb
+++ b/app/decorators/user_decorator.rb
@@ -23,7 +23,7 @@ class UserDecorator < ApplicationDecorator
 
   def gravatar_url
     hash = Digest::MD5.hexdigest(model.email.to_s.downcase)
-    "//gravatar.com/avatar/#{hash}?s=64"
+    "//gravatar.com/avatar/#{hash}?s=128"
   end
 
 end