diff --git a/template/404.qmd.jinja b/template/404.qmd.jinja
new file mode 100644
index 0000000..8c41ab0
--- /dev/null
+++ b/template/404.qmd.jinja
@@ -0,0 +1,19 @@
+---
+{% if is_seedcase_project -%}
+title: "You've entered the garden of missing pages"
+{% else -%}
+title: "The page you are looking for does not exist"
+{% endif -%}
+---
+
+{% if is_seedcase_project -%}
+Let's get you back to greener grounds.
+
+👉 Go to [homepage](/index.qmd).
+
+![](/_extensions/seedcase-project/seedcase-theme/images/404.svg){fig-alt="An illustration of the number 404 surrounded by trees and mountains"}
+
+## Illustration by [Storyset](https://storyset.com/web) {.appendix}
+{%- else -%}
+This page does not exist, go back to the [homepage](/index.qmd) or check the URL for typos.
+{%- endif %}
diff --git a/template/_quarto.yml.jinja b/template/_quarto.yml.jinja
index cf7c3ab..f52eb7c 100644
--- a/template/_quarto.yml.jinja
+++ b/template/_quarto.yml.jinja
@@ -5,6 +5,8 @@ project:
   render:
     - "docs/*"
     - "index.qmd"
+    - "404.qmd"
+    - "CONTRIBUTING.md"
 
 website:
   # TODO: Fill in the title of the website.