diff --git a/python_docs_theme/static/copybutton.js b/python_docs_theme/static/copybutton.js
index f5960d2..16dee00 100644
--- a/python_docs_theme/static/copybutton.js
+++ b/python_docs_theme/static/copybutton.js
@@ -5,6 +5,7 @@ $(document).ready(function() {
     var div = $('.highlight-python .highlight,' +
                 '.highlight-python3 .highlight,' +
                 '.highlight-pycon .highlight,' +
+                '.highlight-pycon3 .highlight,' +
                 '.highlight-default .highlight');
     var pre = div.find('pre');
 
@@ -61,4 +62,3 @@ $(document).ready(function() {
         }
     });
 });
-