diff --git a/.changeset/tiny-files-judge.md b/.changeset/tiny-files-judge.md
new file mode 100644
index 0000000000..781adef3c7
--- /dev/null
+++ b/.changeset/tiny-files-judge.md
@@ -0,0 +1,5 @@
+---
+'@backstage/plugin-techdocs': minor
+---
+
+A new analytics event `not-found` will be published when a user visits a documentation site that does not exist