diff --git a/doc/conf.py b/doc/conf.py
index 4ac91ba..cd3a4c2 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -141,9 +141,15 @@ 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 = dict(
-    github_url="https://github.com/python-escpos/python-escpos",
-)
+# html_theme_options = {}
+
+# Show a 'Edit on GitHub' link instead of 'View page source'
+html_context = {
+  "display_github": True,
+  "github_user": "python-escpos",
+  "github_repo": "python-escpos",
+  "github_version": "master",
+}
 
 # Add any paths that contain custom themes here, relative to this directory.
 # html_theme_path = []