diff --git a/footer.md b/footer.md
new file mode 100644
index 0000000..6eec581
--- /dev/null
+++ b/footer.md
@@ -0,0 +1,5 @@
+Support for this work was provided by NSF grant
+[OAC-2209877](https://www.nsf.gov/awardsearch/showAward?AWD_ID=2209877&HistoricalAwards=false).
+Any opinions, findings, and conclusions or recommendations expressed in this
+material are those of the author(s) and do not necessarily reflect the views of
+the National Science Foundation.
diff --git a/myst.yml b/myst.yml
index 019ba16..e345279 100644
--- a/myst.yml
+++ b/myst.yml
@@ -45,6 +45,8 @@ project:
 
 site:
   template: book-theme
+  parts:
+    footer: footer.md
   options:
     logo_text: SIMPLE-Py
     # Vendored so the build never fetches mystmd.org's default favicon, which