diff --git a/_config.yml b/_config.yml
index 26ae6a2..38cc016 100644
--- a/_config.yml
+++ b/_config.yml
@@ -3,7 +3,6 @@
 
 title: Practice and theory of brain imaging
 author: The nipraxis team
-logo: images/reggie.png
 # >- starts a multiline string, where newlines replaced by spaces, and final
 # newlines are stripped.
 description: >-
@@ -123,6 +122,10 @@ launch_buttons:
 sphinx:
   recursive_update: true
   config:
+    html_theme_options:
+      logo:
+        image_light: images/reggie.png
+        image_dark: images/reggie-inv.png
     nb_custom_formats:
       .Rmd:
         - jupytext.reads
diff --git a/images/reggie-inv.png b/images/reggie-inv.png
new file mode 100644
index 0000000..7d9d630
Binary files /dev/null and b/images/reggie-inv.png differ