diff --git a/docs/source/conf.py b/docs/source/conf.py
index 86fa180175..c706e82bed 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -201,7 +201,7 @@ def reset_mpl(gallery_conf, fname):
 #
 # https://stackoverflow.com/a/33845358/1106930
 #
-html_context = {"version_stable": "2.1.0"}
+html_context = {"version_stable": "2.2.0"}
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.