diff --git a/doc/conf.py b/doc/conf.py
index d7fba67..2f14165 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -141,7 +141,9 @@ else:
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the
 # documentation.
-# html_theme_options = {}
+html_theme_options = dict(
+    github_url='https://github.com/python-escpos/python-escpos',
+    )
 
 # Add any paths that contain custom themes here, relative to this directory.
 # html_theme_path = []