diff --git a/changelog.d/16220.bugfix b/changelog.d/16220.bugfix
new file mode 100644
index 0000000000000000000000000000000000000000..dcfac6bda1106b0dc5064abd17dfa7c9f1084880
--- /dev/null
+++ b/changelog.d/16220.bugfix
@@ -0,0 +1 @@
+Fix a performance regression introduced in Synapse 1.91.0 where event persistence would cause excessive CPU usage over time.
diff --git a/changelog.d/16220.misc b/changelog.d/16220.misc
deleted file mode 100644
index 329e9f76f6fd1aee1f16761064d1199a5aa89a9d..0000000000000000000000000000000000000000
--- a/changelog.d/16220.misc
+++ /dev/null
@@ -1 +0,0 @@
-Fix typo where we ended up with multiple `WorkerLocksHandler`.