diff --git a/lectures/_config.yml b/lectures/_config.yml
index 8f18bfa..c4003d1 100644
--- a/lectures/_config.yml
+++ b/lectures/_config.yml
@@ -76,7 +76,7 @@ sphinx:
           url: https://johnstachurski.net/
       header_organisation_url: https://quantecon.org
       header_organisation: QuantEcon
-      repository_url: https://github.com/QuantEcon/lecture-stats.myst
+      repository_url: https://github.com/QuantEcon/lecture-stats
       nb_repository_url: https://github.com/QuantEcon/lecture-stats.notebooks
       twitter: quantecon
       twitter_logo_url: https://assets.quantecon.org/img/qe-twitter-logo.png
diff --git a/lectures/bayes_nonconj.md b/lectures/bayes_nonconj.md
index c47b8c1..c5b790b 100644
--- a/lectures/bayes_nonconj.md
+++ b/lectures/bayes_nonconj.md
@@ -1,12 +1,10 @@
 ---
 jupytext:
   text_representation:
-    extension: .myst
+    extension: .md
     format_name: myst
-    format_version: 0.13
-    jupytext_version: 1.13.8
 kernelspec:
-  display_name: Python 3 (ipykernel)
+  display_name: Python 3
   language: python
   name: python3
 ---