diff --git a/docs/source/conf.py b/docs/source/conf.py
index d017051cb3..03922a0efa 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -171,6 +171,9 @@
 # If true, "(C) Copyright ..." is shown in the HTML footer. Default is True.
 html_show_copyright = False
 
+# This is to tell search engines to index only stable and latest version
+html_extra_path = ['robots.txt']
+
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ['_templates']
 
diff --git a/docs/source/robots.txt b/docs/source/robots.txt
new file mode 100644
index 0000000000..f94eda030d
--- /dev/null
+++ b/docs/source/robots.txt
@@ -0,0 +1,4 @@
+User-agent: *
+Allow: /projects/aiida-core/en/latest/
+Allow: /projects/aiida-core/en/stable/
+Disallow: /