diff --git a/book/_config.yml b/book/_config.yml
index 4e32db5..367f437 100644
--- a/book/_config.yml
+++ b/book/_config.yml
@@ -14,19 +14,7 @@ sphinx:
   extra_extensions:
   - sphinx_inline_tabs
   - sphinx.ext.imgconverter
-  - download_link_replacer
-  - jupyterbook_patches
-  - teachbooks_sphinx_grasple
-  - sphinx_image_inverter
-  - sphinx_exercise
-  - sphinx_proof
-  - sphinx_code_examples
-  - sphinx_named_colors
-  - sphinx_iframes
-  - sphinx_prime_applets
-  - sphinx_dropdown_toggle
-  - sphinx_accessibility
-  - teachbooks_sphinx_tippy
+  - teachbooks_favourites
   config:
     html_js_files:
     - https://cdnjs.cloudflare.com/ajax/libs/require.js/2.3.4/require.min.js
diff --git a/requirements.txt b/requirements.txt
index fe2ca1e..aaae7f2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,19 +1,6 @@
 teachbooks == 0.2.1
 sphinx-inline-tabs == 2023.4.21
-jupyterbook_patches == 1.7.0
-download_link_replacer == 1.0.4
-teachbooks-sphinx-grasple == 1.2.3
-sphinx-image-inverter == 1.1.2
-sphinx-exercise == 1.0.1
-sphinx-proof == 0.2.1
-sphinx-named-colors == 1.0.1
-sphinx-iframes == 1.0.7
-sphinx-prime-applets == 1.0.2
-sphinx-dropdown-toggle == 1.0.0
-sphinx-code-examples == 1.2.0
-sphinx-accessibility == 1.0.1
-teachbooks-sphinx-tippy == 1.0.13
 
-git+https://github.com/TeachBooks/Sphinx-Thebe
+git+https://github.com/TeachBooks/TeachBooks-Favourites
 
 docutils==0.17.1