diff --git a/.changelog/21519.txt b/.changelog/21519.txt
new file mode 100644
index 000000000000..2913443b1c4d
--- /dev/null
+++ b/.changelog/21519.txt
@@ -0,0 +1,3 @@
+```release-note:bug
+txn: Fix a bug where mismatched Consul server versions could result in undetected data loss for when using newer Transaction verbs.
+```