diff --git a/changelog.d/11684.misc b/changelog.d/11684.misc
new file mode 100644
index 0000000000..841ac6dff7
--- /dev/null
+++ b/changelog.d/11684.misc
@@ -0,0 +1 @@
+Run `pyupgrade --py36-plus` on `synapse/app`, `synapse/appservice`, `synapse/_scripts`, 'synapse/api'.
\ No newline at end of file