diff --git a/configuration/common/nix.nix b/configuration/common/nix.nix
index 057dbe4..8ae4666 100644
--- a/configuration/common/nix.nix
+++ b/configuration/common/nix.nix
@@ -26,7 +26,6 @@
     experimental-features = [
       "flakes"
       "nix-command"
-      "repl-flake"
     ];
     substituters = [
       "https://nix-cache.clerie.de"
@@ -63,6 +62,8 @@
     };
   };
 
+  nix.package = pkgs.nixVersions.nix_2_18;
+
   documentation.doc.enable = false;
 
   environment.systemPackages = with pkgs; [
diff --git a/flake.lock b/flake.lock
index 24da08d..9e217be 100644
--- a/flake.lock
+++ b/flake.lock
@@ -288,11 +288,11 @@
     },
     "nixpkgs_3": {
       "locked": {
-        "lastModified": 1731676054,
-        "narHash": "sha256-OZiZ3m8SCMfh3B6bfGC/Bm4x3qc1m2SVEAlkV6iY7Yg=",
+        "lastModified": 1732014248,
+        "narHash": "sha256-y/MEyuJ5oBWrWAic/14LaIr/u5E0wRVzyYsouYY3W6w=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "5e4fbfb6b3de1aa2872b76d49fafc942626e2add",
+        "rev": "23e89b7da85c3640bbc2173fe04f4bd114342367",
         "type": "github"
       },
       "original": {
diff --git a/hosts/monitoring-3/prometheus.nix b/hosts/monitoring-3/prometheus.nix
index 9e9fa52..17966eb 100644
--- a/hosts/monitoring-3/prometheus.nix
+++ b/hosts/monitoring-3/prometheus.nix
@@ -230,15 +230,6 @@ in {
               "achtbaan.nikhef.nl"
               "www.fem.tu-ilmenau.de"
               "www.heise.de"
-              "pe10-fd2.nodes.nethinks.com"
-              "pe20-fd2.nodes.nethinks.com"
-              "pe10-pet1.nodes.nethinks.com"
-              "pe20-pet1.nodes.nethinks.com"
-              "pe10-ffm1.nodes.nethinks.com"
-              "ie10-ffm2.nodes.nethinks.com"
-              "pe10-ffm2.nodes.nethinks.com"
-              "ie10-due1.nodes.nethinks.com"
-              "pe10-due1.nodes.nethinks.com"
               "matrix.bau-ha.us"
               "dyon.net.entr0py.de"
               "matrix.entr0py.de"
@@ -358,46 +349,6 @@ in {
           relabelAddressToInstance
         ];
       }
-      {
-        job_name = "zimmer-temp";
-        scrape_interval = "20s";
-        scheme = "https";
-        metrics_path = "/data/zimmer-temp/";
-        static_configs = [
-          {
-            targets = [
-              "iot-data.clerie.de"
-            ];
-          }
-        ];
-      }
-      {
-        job_name = "outdoor-temp";
-        scrape_interval = "20s";
-        scheme = "https";
-        metrics_path = "/data/outdoor-temp/";
-        static_configs = [
-          {
-            targets = [
-              "iot-data.clerie.de"
-            ];
-          }
-        ];
-      }
-      {
-        job_name = "xmpp-alerts";
-        scrape_interval = "20s";
-        static_configs = [
-          {
-            targets = [
-              "monitoring-3.mon.clerie.de:9199"
-            ];
-          }
-        ];
-        relabel_configs = [
-          relabelAddressToInstance
-        ];
-      }
       {
         job_name = "hydra";
         scrape_interval = "20s";
diff --git a/hosts/web-2/bubblesort.nix b/hosts/web-2/bubblesort.nix
deleted file mode 100644
index 2303285..0000000
--- a/hosts/web-2/bubblesort.nix
+++ /dev/null
@@ -1,14 +0,0 @@
-{ pkgs, ... }:
-{
-  services.nginx.virtualHosts = {
-    "bubblesort.clerie.de" = {
-      enableACME = true;
-      forceSSL = true;
-      root = pkgs.fetchgit {
-        url = "https://git.clerie.de/clerie/bubblesort_js.git";
-        rev = "39d54701a11f4fb48d7e023e384a848e6bde5640";
-        sha256 = "sha256-au/sbTVLDER0BbXD6cKJIpq0GcS/saiRQw46mZQWsO0=";
-      };
-    };
-  };
-}
diff --git a/hosts/web-2/clerie.nix b/hosts/web-2/clerie.nix
index b6e3d72..93a7cf4 100644
--- a/hosts/web-2/clerie.nix
+++ b/hosts/web-2/clerie.nix
@@ -15,8 +15,8 @@
       forceSSL = true;
       root = pkgs.fetchgit {
         url = "https://git.clerie.de/clerie/clerie.de.git";
-        rev = "785693e6826c6377c3f3200274c281d2ef3317b3";
-        hash = "sha256-cyTHOOm7hpPUD8paKB7Wci3RYAo6Jr/MI/Xqx4iwXwY=";
+        rev = "ec744cbeaf99ae4fd4832d7e594bc72bfabc8706";
+        hash = "sha256-EG8UO/9ycyWjtqLUX7ydctLdIbq/j8zylEK7YYvEwmI=";
       };
       locations."/ssh" = {
         extraConfig = ''
diff --git a/hosts/web-2/configuration.nix b/hosts/web-2/configuration.nix
index f7567e8..3998278 100644
--- a/hosts/web-2/configuration.nix
+++ b/hosts/web-2/configuration.nix
@@ -5,27 +5,23 @@
     [
       ./hardware-configuration.nix
       ./blog.nix
-      ./bubblesort.nix
       ./bula22.nix
       ./chaosevents.nix
       ./clerie.nix
       ./drop.nix
       ./fieldpoc.nix
       ./gitea.nix
-      ./iot-data.nix
       ./ip.nix
       ./legal.nix
       ./meow.nix
       ./milchinsel.nix
       ./mitel-ommclient2.nix
       ./nix-install.nix
-      ./nogo2024.nix
       ./nurausstieg.nix
       ./ping.nix
       ./public.nix
       ./radicale.nix
       ./reichartstrasse.nix
-      ./tap.nix
       ./uptimestatus.nix
       ./wetter.nix
     ];
diff --git a/hosts/web-2/iot-data.nix b/hosts/web-2/iot-data.nix
deleted file mode 100644
index 64da990..0000000
--- a/hosts/web-2/iot-data.nix
+++ /dev/null
@@ -1,40 +0,0 @@
-{pkgs, ...}:
-
-{
-  users.users.iot-data = {
-    description = "IOT Data Service";
-    group = "iot-data";
-    home = "/var/lib/iot-data/";
-    useDefaultShell = true;
-    isSystemUser = true;
-  };
-  users.groups.iot-data = {};
-
-  systemd.services.iot-data = {
-    wantedBy = [ "multi-user.target" ];
-    serviceConfig = {
-      RuntimeDirectory = "iot-data";
-      StateDirectory = "iot-data";
-      User = "iot-data";
-      Group = "iot-data";
-    };
-    environment = {
-      IOT_DATA_CONFIG = "/var/src/iot-data-config.json";
-    };
-    script = "gunicorn -w 1 -b [::1]:8235 iot_data:app";
-    path = with pkgs; [ (python3.withPackages (ps: [ ps.gunicorn iot-data ])) ];
-  };
-
-  services.nginx.virtualHosts = {
-    "iot-data.clerie.de" = {
-      enableACME = true;
-      addSSL = true;
-      locations."/" = {
-        proxyPass = "http://[::1]:8235";
-      };
-      extraConfig = ''
-        access_log off;
-      '';
-    };
-  };
-}
diff --git a/hosts/web-2/nogo2024.nix b/hosts/web-2/nogo2024.nix
deleted file mode 100644
index 26c7433..0000000
--- a/hosts/web-2/nogo2024.nix
+++ /dev/null
@@ -1,20 +0,0 @@
-{ pkgs, ... }:
-
-{
-  services.nginx.virtualHosts = {
-    "nogo2024.clerie.de" = {
-      enableACME = true;
-      forceSSL = true;
-      locations."/" = {
-        return = "404";
-      };
-      locations."= /nogo2024.ics" = {
-        root = pkgs.fetchgit {
-          url = "https://git.clerie.de/clerie/nogo2024.git";
-          rev = "fdc07667e6cfa09e91eaaee488528fb842a6115d";
-          sha256 = "sha256-qRviw0sQnMmrkwBO0+AWnmeqZK8wXeFxZJgmLMUtzn4=";
-        };
-      };
-    };
-  };
-}
diff --git a/hosts/web-2/tap.nix b/hosts/web-2/tap.nix
deleted file mode 100644
index 09582ce..0000000
--- a/hosts/web-2/tap.nix
+++ /dev/null
@@ -1,15 +0,0 @@
-{ pkgs, ... }:
-
-{
-  services.nginx.virtualHosts = {
-    "tap.clerie.de" = {
-      enableACME = true;
-      forceSSL = true;
-      root = pkgs.fetchgit {
-        url = "https://git.clerie.de/clerie/tap.clerie.de.git";
-        rev = "a90df6f6cb6dc58ab807b230527aae76c48cdcc8";
-        sha256 = "sha256-GTUy98NHXvR7pG8lUWZm6wa0XjULnDTSu17C/DQuXBI=";
-      };
-    };
-  };
-}