diff --git a/.readthedocs.yml b/.readthedocs.yml
index 1b0f323..b763743 100644
--- a/.readthedocs.yml
+++ b/.readthedocs.yml
@@ -20,4 +20,4 @@ conda:
 sphinx:
   builder: html
   fail_on_warning: true
-  configuration: book/_config.yml
\ No newline at end of file
+  configuration: book/conf.py
\ No newline at end of file
diff --git a/book/_config.yml b/book/_config.yml
index 106c7c3..f35a075 100644
--- a/book/_config.yml
+++ b/book/_config.yml
@@ -29,19 +29,20 @@ html:
   use_repository_button: true
   use_edit_page_button: true
   logo: true
+  announcement: ' 📢 Register now for the <a href="https://mit.zoom.us/meeting/register/PElrepT-Tpivqzu9Jepr_g#/registration" target="_blank">FESTIM 2.0 webinar on 15th May, 9:00 am EST'
   analytics:
     google_analytics_id: G-B9MJGSTP5V
   
 execute:
   # Force re-execution of notebooks on each build.
-  # See https://jupyterbook.org/content/execute.html
+  # See https://jupyter-book.readthedocs.io/v1/content/execute.html
   execute_notebooks: force
   timeout: -1  # Disable timeouts for executing notebooks cells
   # allow_errors: true  # Allow errors in notebook cells
 
 sphinx:
   config:
-    html_static_path: ["images"]
+    html_static_path: ["images", "_static"]
     html_last_updated_fmt: "%b %d, %Y"
     suppress_warnings:
       - "mystnb.unknown_mime_type"
@@ -64,8 +65,9 @@ sphinx:
       pyvista: ["https://docs.pyvista.org/", null]
       packaging: ["https://packaging.pypa.io/en/stable/", null]
       matplotlib: ["https://matplotlib.org/stable/", null]
-      festim: ["https://festim.readthedocs.io/en/stable/", null]
+      festim: ["https://festim.readthedocs.io/en/latest/", null]
     html_favicon: "images/festim logo symbol.png"
+    nb_execution_show_tb: True
 
   extra_extensions:
     - "sphinx.ext.autodoc"
diff --git a/book/_static/style.css b/book/_static/style.css
new file mode 100644
index 0000000..b1410e1
--- /dev/null
+++ b/book/_static/style.css
@@ -0,0 +1,3 @@
+html[data-theme="light"] .bd-header-announcement a {
+  color: #ade0e9
+}
\ No newline at end of file
diff --git a/book/conf.py b/book/conf.py
new file mode 100644
index 0000000..34ec76d
--- /dev/null
+++ b/book/conf.py
@@ -0,0 +1 @@
+# Dummy conf.py to satisfy ReadTheDocs validation before pre_build step