diff --git a/changes/bug19563 b/changes/bug19563
new file mode 100644
index 0000000000..dbf3859135
--- /dev/null
+++ b/changes/bug19563
@@ -0,0 +1,3 @@
+  o Testing:
+    - New unit tests for tor_htonll(). Closes ticket 19563. Patch from
+      "overcaffeinated".