diff --git a/docs/_extra/robots.txt b/docs/_extra/robots.txt
new file mode 100644
index 00000000..eb053628
--- /dev/null
+++ b/docs/_extra/robots.txt
@@ -0,0 +1,2 @@
+User-agent: *
+Disallow:
diff --git a/docs/conf.py b/docs/conf.py
index 7434ca18..86db98be 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -156,7 +156,7 @@
 # Add any extra paths that contain custom files (such as robots.txt or
 # .htaccess) here, relative to this directory. These files are copied
 # directly to the root of the documentation.
-#html_extra_path = []
+html_extra_path = ['_extra']
 
 # If not '', a 'Last updated on:' timestamp is inserted at every page bottom,
 # using the given strftime format.