diff --git a/.changeset/lazy-elephants-relate.md b/.changeset/lazy-elephants-relate.md
new file mode 100644
index 000000000000..7e9095dbb8eb
--- /dev/null
+++ b/.changeset/lazy-elephants-relate.md
@@ -0,0 +1,5 @@
+---
+'@astrojs/rss': patch
+---
+
+Preserve self-closing tags in `customData` option