diff --git a/flake.lock b/flake.lock
index 7b48c90..c7304f3 100644
--- a/flake.lock
+++ b/flake.lock
@@ -180,11 +180,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1712386041,
-        "narHash": "sha256-dA82pOMQNnCJMAsPG7AXG35VmCSMZsJHTFlTHizpKWQ=",
+        "lastModified": 1714043624,
+        "narHash": "sha256-Xn2r0Jv95TswvPlvamCC46wwNo8ALjRCMBJbGykdhcM=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "d6bb9f934f2870e5cbc5b94c79e9db22246141ff",
+        "rev": "86853e31dc1b62c6eeed11c667e8cdd0285d4411",
         "type": "github"
       },
       "original": {
@@ -224,11 +224,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1713543876,
-        "narHash": "sha256-olEWxacm1xZhAtpq+ZkEyQgR4zgfE7ddpNtZNvubi3g=",
+        "lastModified": 1713946171,
+        "narHash": "sha256-lc75rgRQLdp4Dzogv5cfqOg6qYc5Rp83oedF2t0kDp8=",
         "owner": "lnl7",
         "repo": "nix-darwin",
-        "rev": "9e7c20ffd056e406ddd0276ee9d89f09c5e5f4ed",
+        "rev": "230a197063de9287128e2c68a7a4b0cd7d0b50a7",
         "type": "github"
       },
       "original": {
@@ -255,11 +255,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1713564160,
-        "narHash": "sha256-YguPZpiejgzLEcO36/SZULjJQ55iWcjAmf3lYiyV1Fo=",
+        "lastModified": 1713995372,
+        "narHash": "sha256-fFE3M0vCoiSwCX02z8VF58jXFRj9enYUSTqjyHAjrds=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "bc194f70731cc5d2b046a6c1b3b15f170f05999c",
+        "rev": "dd37924974b9202f8226ed5d74a252a9785aedf8",
         "type": "github"
       },
       "original": {
@@ -405,11 +405,11 @@
     },
     "unstable": {
       "locked": {
-        "lastModified": 1713537308,
-        "narHash": "sha256-XtTSSIB2DA6tOv+l0FhvfDMiyCmhoRbNB+0SeInZkbk=",
+        "lastModified": 1713895582,
+        "narHash": "sha256-cfh1hi+6muQMbi9acOlju3V1gl8BEaZBXBR9jQfQi4U=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "5c24cf2f0a12ad855f444c30b2421d044120c66f",
+        "rev": "572af610f6151fd41c212f897c71f7056e3fb518",
         "type": "github"
       },
       "original": {
diff --git a/hosts/nachtigall/apps/matrix/irc.nix b/hosts/nachtigall/apps/matrix/irc.nix
index fb2c1e0..defe991 100644
--- a/hosts/nachtigall/apps/matrix/irc.nix
+++ b/hosts/nachtigall/apps/matrix/irc.nix
@@ -13,11 +13,6 @@ let
   synapseClientPort = "${toString listenerWithClient.port}";
 in
 {
-  systemd.services.matrix-appservice-irc.serviceConfig.SystemCallFilter = lib.mkForce [
-    "@system-service @pkey"
-    "~@privileged @resources"
-    "@chown"
-  ];
   services.matrix-appservice-irc = {
     enable = true;
     localpart = "irc_bot";