diff --git a/.github/workflows/docs.yaml b/.github/workflows/docs.yaml
index 2bf32e376..b366eb866 100644
--- a/.github/workflows/docs.yaml
+++ b/.github/workflows/docs.yaml
@@ -22,7 +22,7 @@ jobs:
       - name: Setup mdbook
         uses: peaceiris/actions-mdbook@4b5ef36b314c2599664ca107bb8c02412548d79d # v1.1.14
         with:
-          mdbook-version: '0.4.9'
+          mdbook-version: '0.4.17'
 
       - name: Build the documentation
         # mdbook will only create an index.html if we're including docs/README.md in SUMMARY.md.
diff --git a/changelog.d/12339.doc b/changelog.d/12339.doc
new file mode 100644
index 000000000..cdbd55bb3
--- /dev/null
+++ b/changelog.d/12339.doc
@@ -0,0 +1 @@
+Upgrade the version of `mdbook` in CI to 0.4.17.