diff --git a/book/_toc.yml b/book/_toc.yml
index c4ba6c7..fcfc64f 100644
--- a/book/_toc.yml
+++ b/book/_toc.yml
@@ -9,6 +9,7 @@ parts:
       - file: installation-and-setup/extension
       - file: installation-and-setup/git-setup
       - file: installation-and-setup/git-hub-desktop
+      - file: installation-and-setup/environments
       - file: installation-and-setup/vscode-setup
       - file: installation-and-setup/jupyter-book-setup
     - file: workflows/overview