diff --git a/CHANGELOG.md b/CHANGELOG.md
index 24f04f16..3a2f5bb6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,9 @@
 
 ## untagged
 
+- Add robots.txt to exclude all web crawlers
+  ([#732](https://github.com/chatmail/relay/pull/732))
+
 - acmetool: accept new Let's Encrypt ToS: https://letsencrypt.org/documents/LE-SA-v1.6-August-18-2025.pdf
   ([#729](https://github.com/chatmail/relay/pull/729))
 
diff --git a/www/src/robots.txt b/www/src/robots.txt
new file mode 100644
index 00000000..1f53798b
--- /dev/null
+++ b/www/src/robots.txt
@@ -0,0 +1,2 @@
+User-agent: *
+Disallow: /