diff --git a/changelog/unreleased/issue-4209 b/changelog/unreleased/issue-4209
new file mode 100644
index 000000000..2e49191c1
--- /dev/null
+++ b/changelog/unreleased/issue-4209
@@ -0,0 +1,7 @@
+Bugfix: Fix slow sftp upload performance
+
+Since restic 0.12.1, the upload speed of the sftp backend to a remote server
+has regressed significantly. This has been fixed.
+
+https://github.com/restic/restic/issues/4209
+https://github.com/restic/restic/pull/4782