diff --git a/index.html b/index.html
index ef98bdaa..152b9e9d 100644
--- a/index.html
+++ b/index.html
@@ -15,6 +15,9 @@
 	<!-- content security policy -->
 	<meta http-equiv='Content-Security-Policy' content="Content-Security-Policy: default-src 'none'; script-src https://privacytoolsio.github.io"; style-src 'unsafe-inline'>
 
+	<!-- referrer policy -->
+	<meta http-equiv="Referrer-Policy" content="no-referrer">
+
 	<!-- title -->
 	<title>Privacy Tools - Encryption Against Global Mass Surveillance</title>