diff --git a/conf/systemd.service b/conf/systemd.service
index e961638..9d09edc 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -10,6 +10,7 @@ WorkingDirectory=__FINALPATH__/
 ExecStart=__FINALPATH__/bin/dendrite-monolith-server --tls-cert=/etc/yunohost/certs/__DOMAIN__/crt.pem --tls-key=/etc/yunohost/certs/__DOMAIN__/key.pem --config=dendrite.yaml --http-bind-address=:__PORT__ --https-bind-address=:__TLS_PORT__ __REALLY_ENABLE_OPEN_REGISTRATION__
 StandardOutput=append:/var/log/__APP__/__APP__.log
 StandardError=inherit
+LimitNOFILE=65535
 
 # Sandboxing options to harden security
 # Depending on specificities of your service/app, you may need to tweak these