diff --git a/README.md b/README.md
index 189d531..24d7171 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ If you don't have YunoHost, please consult [the guide](https://yunohost.org/#/in
 Akkoma is a microblogging server software that can federate (= exchange messages with) other servers that support ActivityPub. What that means is that you can host a server for yourself or your friends and stay in control of your online identity, but still exchange messages with people on larger decentrilized and federated network. Akkoma will federate with all servers that implement ActivityPub, like Friendica, GNU Social, Hubzilla, Mastodon, Misskey, Pleroma, Peertube, or Pixelfed.
 
 
-**Shipped version:** 3.9.2~ynh1
+**Shipped version:** 3.9.2~ynh2
 
 **Demo:** https://otp.akkoma.dev
 
diff --git a/README_fr.md b/README_fr.md
index b1df3d6..afe76bf 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -19,7 +19,7 @@ Si vous n’avez pas YunoHost, regardez [ici](https://yunohost.org/#/install) po
 Akkoma is a microblogging server software that can federate (= exchange messages with) other servers that support ActivityPub. What that means is that you can host a server for yourself or your friends and stay in control of your online identity, but still exchange messages with people on larger decentrilized and federated network. Akkoma will federate with all servers that implement ActivityPub, like Friendica, GNU Social, Hubzilla, Mastodon, Misskey, Pleroma, Peertube, or Pixelfed.
 
 
-**Version incluse :** 3.9.2~ynh1
+**Version incluse :** 3.9.2~ynh2
 
 **Démo :** https://otp.akkoma.dev
 
diff --git a/conf/systemd.service b/conf/systemd.service
index c013392..42c4747 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -22,18 +22,34 @@ WorkingDirectory=__FINALPATH__/live/
 ExecStart=__FINALPATH__/live/bin/pleroma start
 ExecStop=__FINALPATH__/live/bin/pleroma stop
 
-; Some security directives.
-; Use private /tmp and /var/tmp folders inside a new file system namespace, which are discarded after the process stops.
-PrivateTmp=true
-; The /home, /root, and /run/user folders can not be accessed by this service anymore. If your Pleroma user has its home folder in one of the restricted places, or use one of these folders as its working directory, you have to set this to false.
-ProtectHome=false
-; Mount /usr, /boot, and /etc as read-only for processes invoked by this service.
-ProtectSystem=full
-; Sets up a new /dev mount for the process and only adds API pseudo devices like /dev/null, /dev/zero or /dev/random but not physical devices. Disabled by default because it may not work on devices like the Raspberry Pi.
-PrivateDevices=false
+# Sandboxing options to harden security
+# Depending on specificities of your service/app, you may need to tweak these
+# .. but this should be a good baseline
+# Details for these options: https://www.freedesktop.org/software/systemd/man/systemd.exec.html
 ; Ensures that the service process and all its children can never gain new privileges through execve().
-NoNewPrivileges=true
-; Drops the sysadmin capability from the daemon.
+NoNewPrivileges=yes
+# Use private /tmp and /var/tmp folders inside a new file system namespace, which are discarded after the process stops.
+PrivateTmp=yes
+# Sets up a new /dev mount for the process and only adds API pseudo devices like /dev/null, /dev/zero or /dev/random but not physical devices. Disabled by default because it may not work on devices like the Raspberry Pi.
+PrivateDevices=yes
+RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6 AF_NETLINK
+RestrictNamespaces=yes
+RestrictRealtime=yes
+DevicePolicy=closed
+ProtectClock=yes
+ProtectHostname=yes
+ProtectProc=invisible
+# Mount /usr, /boot, and /etc as read-only for processes invoked by this service.
+ProtectSystem=full
+# The /home, /root, and /run/user folders can not be accessed by this service anymore. If your Akkoma user has its home folder in one of the restricted places, or use one of these folders as its working directory, you have to set this to false.
+ProtectHome=false
+ProtectControlGroups=yes
+ProtectKernelModules=yes
+ProtectKernelTunables=yes
+LockPersonality=yes
+SystemCallArchitectures=native
+SystemCallFilter=~@clock @debug @module @mount @obsolete @reboot @setuid @swap @cpu-emulation @privileged
+
 CapabilityBoundingSet=~CAP_SYS_ADMIN
 
 [Install]
diff --git a/manifest.json b/manifest.json
index 1eda781..5d62a2a 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Federated social networking server built on ActivityPub open protocol",
         "fr": "Serveur de réseautage social fédéré basé sur le protocole ouvert ActivityPub"
     },
-    "version": "3.9.2~ynh1",
+    "version": "3.9.2~ynh2",
     "url": "https://akkoma.social/",
     "upstream": {
         "license": "AGPL-3.0-only",