diff --git a/changelog.d/19356.misc b/changelog.d/19356.misc
new file mode 100644
index 0000000000..3b9d16a380
--- /dev/null
+++ b/changelog.d/19356.misc
@@ -0,0 +1 @@
+Bump `mdbook` from 0.4.17 to 0.5.2 and remove our custom table-of-contents plugin in favour of the new default functionality.
\ No newline at end of file