diff --git a/data/prosody/configuration/prosody.cfg.lua b/data/prosody/configuration/prosody.cfg.lua
index 93c7652..3c12a2f 100644
--- a/data/prosody/configuration/prosody.cfg.lua
+++ b/data/prosody/configuration/prosody.cfg.lua
@@ -57,7 +57,7 @@ https_ports = { 5281 }
 
 -- Require TLS on c2s/s2s connections
 c2s_require_encryption = true
-s2s_require_encryption = false
+s2s_require_encryption = true
 
 -- Authentication
 authentication = "internal_plain"