diff --git a/lectures/_config.yml b/lectures/_config.yml
index 72af677f..e7ec9b45 100644
--- a/lectures/_config.yml
+++ b/lectures/_config.yml
@@ -145,6 +145,7 @@ sphinx:
     mathjax_path: https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js
     rediraffe_redirects:
       index_toc.md: intro.md
+      lake_model.md: lake_model_intro.md
     # Remote Redirects
     redirects:
       ak2:   https://python.quantecon.org/ak2.html
diff --git a/lectures/_toc.yml b/lectures/_toc.yml
index b0f50c20..0d898865 100644
--- a/lectures/_toc.yml
+++ b/lectures/_toc.yml
@@ -85,7 +85,7 @@ parts:
   chapters:
   - file: eigen_II
   - file: input_output
-  - file: lake_model
+  - file: lake_model_intro
   - file: networks
   - file: mobility
 - caption: Markets and Competitive Equilibrium
diff --git a/lectures/lake_model.md b/lectures/lake_model_intro.md
similarity index 100%
rename from lectures/lake_model.md
rename to lectures/lake_model_intro.md