diff --git a/README.md b/README.md
index ce996f6..cfc00fa 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ If you don't have YunoHost, please consult [the guide](https://yunohost.org/#/in
 
 Multi-protocols bridge for online communications
 
-**Shipped version:** 1.22.3~ynh1
+**Shipped version:** 1.22.3~ynh2
 
 
 
diff --git a/README_fr.md b/README_fr.md
index 3f820b3..e35b31b 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -13,7 +13,7 @@ Si vous n'avez pas YunoHost, regardez [ici](https://yunohost.org/#/install) pour
 
 Connecteur entre une série de protocoles de discussion
 
-**Version incluse :** 1.22.3~ynh1
+**Version incluse :** 1.22.3~ynh2
 
 
 
diff --git a/conf/systemd.service b/conf/systemd.service
index ad69553..a972d44 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -12,5 +12,35 @@ ExecStart=__FINALPATH__/matterbridge -conf __FINALPATH__/matterbridge.toml
 RestartSec=30
 Restart=always
 
+# 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
+NoNewPrivileges=yes
+PrivateTmp=yes
+PrivateDevices=yes
+RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6
+RestrictNamespaces=yes
+RestrictRealtime=yes
+DevicePolicy=closed
+ProtectSystem=full
+ProtectControlGroups=yes
+ProtectKernelModules=yes
+ProtectKernelTunables=yes
+LockPersonality=yes
+SystemCallFilter=~@clock @debug @module @mount @obsolete @reboot @setuid @swap
+
+# Denying access to capabilities that should not be relevant for webapps
+# Doc: https://man7.org/linux/man-pages/man7/capabilities.7.html
+CapabilityBoundingSet=~CAP_RAWIO CAP_MKNOD
+CapabilityBoundingSet=~CAP_AUDIT_CONTROL CAP_AUDIT_READ CAP_AUDIT_WRITE
+CapabilityBoundingSet=~CAP_SYS_BOOT CAP_SYS_TIME CAP_SYS_MODULE CAP_SYS_PACCT
+CapabilityBoundingSet=~CAP_LEASE CAP_LINUX_IMMUTABLE CAP_IPC_LOCK
+CapabilityBoundingSet=~CAP_BLOCK_SUSPEND CAP_WAKE_ALARM
+CapabilityBoundingSet=~CAP_SYS_TTY_CONFIG
+CapabilityBoundingSet=~CAP_MAC_ADMIN CAP_MAC_OVERRIDE
+CapabilityBoundingSet=~CAP_NET_ADMIN CAP_NET_BROADCAST CAP_NET_RAW
+CapabilityBoundingSet=~CAP_SYS_ADMIN CAP_SYS_PTRACE CAP_SYSLOG 
+
 [Install]
 WantedBy=multi-user.target
diff --git a/manifest.json b/manifest.json
index 096fc66..f2e4318 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Multi-protocols bridge for online communications",
         "fr": "Connecteur entre une série de protocoles de discussion"
     },
-    "version": "1.22.3~ynh1",
+    "version": "1.22.3~ynh2",
     "url": "https://github.com/42wim/matterbridge",
     "upstream": {
         "license": "Apache-2.0",