diff --git a/.changeset/hungry-owls-sell.md b/.changeset/hungry-owls-sell.md
new file mode 100644
index 0000000000..cb2c18c21c
--- /dev/null
+++ b/.changeset/hungry-owls-sell.md
@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-techdocs': patch
+---
+
+Fix techdocs config schema for custom elements sanitizer