diff --git a/relay/torrc b/relay/torrc
index 3bfc6285..29f757a7 100644
--- a/relay/torrc
+++ b/relay/torrc
@@ -1,2 +1,3 @@
 HiddenServiceDir build/tor-hidden-service
 HiddenServicePort 80 127.0.0.1:8080
+HiddenServicePoWDefensesEnabled 1