diff --git a/changelog.d/13924.misc b/changelog.d/13924.misc
new file mode 100644
index 000000000000..7770b6f03f2b
--- /dev/null
+++ b/changelog.d/13924.misc
@@ -0,0 +1 @@
+Update an innaccurate comment in Synapse's upsert database helper.