diff --git a/lectures/_config.yml b/lectures/_config.yml
index d6999ba..a8870e5 100644
--- a/lectures/_config.yml
+++ b/lectures/_config.yml
@@ -84,7 +84,8 @@ sphinx:
       header_organisation_url: https://quantecon.org
       header_organisation: QuantEcon
       repository_url: https://github.com/QuantEcon/lecture-dp
-      nb_repository_url: https://github.com/QuantEcon/lecture-dp.notebooks
+      # nb_repository_url omitted deliberately: no notebooks repo exists for this
+      # series yet, and the theme skips notebook-launch links when it is unset
       path_to_docs: lectures
       twitter: quantecon
       twitter_logo_url: https://assets.quantecon.org/img/qe-twitter-logo.png