diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6eba117..a9fa2c9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -45,17 +45,3 @@ jobs:
           lfs: false
       - name: "Deploy profile"
         run: "auto-deploy ${{ matrix.profile }}"
-  deploy-ci:
-    needs: deploy
-    if: success() && github.ref == 'refs/heads/main'
-    runs-on: nix
-    env:
-      SSH_DEPLOY_KEY: "${{ secrets.SSH_DEPLOY_KEY }}"
-    steps:
-      - name: Initialize CI
-        uses: https://git.qo.is/qo.is/actions-nix-init@main
-        with:
-          token: ${{ secrets.CI_TOKEN }}
-          lfs: false
-      - name: "Deploy profile"
-        run: "auto-deploy system-ci"
diff --git a/defaults/meta/hosts.json b/defaults/meta/hosts.json
index 37532af..39d478d 100644
--- a/defaults/meta/hosts.json
+++ b/defaults/meta/hosts.json
@@ -17,7 +17,7 @@
   },
   "lindberg-webapps": {
     "hostName": "lindberg-webapps",
-    "sshKey": "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIByESy+XiBT8/PoE8DUB388B5MA6LVcJBgH1ZgYxr9Mg"
+    "sshKey": "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJT99lj5OI+V1PlZl/T2ikBORwMiXjDfWpHYfq/GvUM5"
   },
   "batzberg": {
     "hostName": "batzberg"
diff --git a/flake.lock b/flake.lock
index e0b4195..dd62963 100644
--- a/flake.lock
+++ b/flake.lock
@@ -23,15 +23,15 @@
     "disko": {
       "inputs": {
         "nixpkgs": [
-          "nixpkgs"
+          "nixpkgs-nixos-stable"
         ]
       },
       "locked": {
-        "lastModified": 1751854533,
-        "narHash": "sha256-U/OQFplExOR1jazZY4KkaQkJqOl59xlh21HP9mI79Vc=",
+        "lastModified": 1749200714,
+        "narHash": "sha256-W8KiJIrVwmf43JOPbbTu5lzq+cmdtRqaNbOsZigjioY=",
         "owner": "nix-community",
         "repo": "disko",
-        "rev": "16b74a1e304197248a1bc663280f2548dbfcae3c",
+        "rev": "17d08c65c241b1d65b3ddf79e3fac1ddc870b0f6",
         "type": "github"
       },
       "original": {
@@ -81,11 +81,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1750779888,
-        "narHash": "sha256-wibppH3g/E2lxU43ZQHC5yA/7kIKLGxVEnsnVK1BtRg=",
+        "lastModified": 1747372754,
+        "narHash": "sha256-2Y53NGIX2vxfie1rOW0Qb86vjRZ7ngizoo+bnXU9D9k=",
         "owner": "cachix",
         "repo": "git-hooks.nix",
-        "rev": "16ec914f6fb6f599ce988427d9d94efddf25fe6d",
+        "rev": "80479b6ec16fefd9c1db3ea13aeb038c60530f46",
         "type": "github"
       },
       "original": {
@@ -131,18 +131,34 @@
         "type": "github"
       }
     },
-    "nixpkgs_2": {
+    "nixpkgs-nixos-stable": {
       "locked": {
-        "lastModified": 1751741127,
-        "narHash": "sha256-t75Shs76NgxjZSgvvZZ9qOmz5zuBE8buUaYD28BMTxg=",
+        "lastModified": 1748995628,
+        "narHash": "sha256-bFufQGSAEYQgjtc4wMrobS5HWN0hDP+ZX+zthYcml9U=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "29e290002bfff26af1db6f64d070698019460302",
+        "rev": "8eb3b6a2366a7095939cd22f0dc0e9991313294b",
         "type": "github"
       },
       "original": {
         "owner": "NixOS",
-        "ref": "nixos-25.05",
+        "ref": "nixos-24.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs_2": {
+      "locked": {
+        "lastModified": 1749143949,
+        "narHash": "sha256-QuUtALJpVrPnPeozlUG/y+oIMSLdptHxb3GK6cpSVhA=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "d3d2d80a2191a73d1e86456a751b83aa13085d7d",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
         "repo": "nixpkgs",
         "type": "github"
       }
@@ -154,10 +170,10 @@
         ]
       },
       "locked": {
-        "lastModified": 1749920008,
-        "narHash": "sha256-wn3U2q/+OQYErVyoY9kwZP/fXcDG4ewhJkHX7qHzq8g=",
-        "rev": "5f8ba2025848dd30539c42ef1f7e6c6f917e70d9",
-        "revCount": 19,
+        "lastModified": 1747599024,
+        "narHash": "sha256-qc94Cyt6uaQCVY2VlCtNxGb7hs3DbLvxuhEnSLFL8T8=",
+        "rev": "bed7588246ec58aacac3d0ff5b191fa6cc9faa98",
+        "revCount": 17,
         "type": "git",
         "url": "file:./private"
       },
@@ -172,6 +188,7 @@
         "disko": "disko",
         "git-hooks-nix": "git-hooks-nix",
         "nixpkgs": "nixpkgs_2",
+        "nixpkgs-nixos-stable": "nixpkgs-nixos-stable",
         "private": "private",
         "sops-nix": "sops-nix",
         "treefmt-nix": "treefmt-nix"
@@ -184,11 +201,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1751606940,
-        "narHash": "sha256-KrDPXobG7DFKTOteqdSVeL1bMVitDcy7otpVZWDE6MA=",
+        "lastModified": 1747603214,
+        "narHash": "sha256-lAblXm0VwifYCJ/ILPXJwlz0qNY07DDYdLD+9H+Wc8o=",
         "owner": "Mic92",
         "repo": "sops-nix",
-        "rev": "3633fc4acf03f43b260244d94c71e9e14a2f6e0d",
+        "rev": "8d215e1c981be3aa37e47aeabd4e61bb069548fd",
         "type": "github"
       },
       "original": {
@@ -219,11 +236,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1750931469,
-        "narHash": "sha256-0IEdQB1nS+uViQw4k3VGUXntjkDp7aAlqcxdewb/hAc=",
+        "lastModified": 1749194973,
+        "narHash": "sha256-eEy8cuS0mZ2j/r/FE0/LYBSBcIs/MKOIVakwHVuqTfk=",
         "owner": "numtide",
         "repo": "treefmt-nix",
-        "rev": "ac8e6f32e11e9c7f153823abc3ab007f2a65d3e1",
+        "rev": "a05be418a1af1198ca0f63facb13c985db4cb3c5",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index b645da8..df38c88 100644
--- a/flake.nix
+++ b/flake.nix
@@ -5,7 +5,8 @@
     extra-trusted-public-keys = "qois-infrastructure:lh35ymN7Aoxm5Hz0S6JusxE+cYzMU+x9OMKjDVIpfuE=";
   };
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-25.05";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    nixpkgs-nixos-stable.url = "github:NixOS/nixpkgs/nixos-24.11";
 
     treefmt-nix = {
       url = "github:numtide/treefmt-nix";
@@ -23,7 +24,7 @@
     deploy-rs.url = "github:serokell/deploy-rs";
     disko = {
       url = "github:nix-community/disko";
-      inputs.nixpkgs.follows = "nixpkgs";
+      inputs.nixpkgs.follows = "nixpkgs-nixos-stable";
     };
     private.url = "git+file:./private";
     private.inputs.nixpkgs.follows = "nixpkgs";
@@ -58,7 +59,7 @@
         inherit (inputs)
           deploy-rs
           disko
-          nixpkgs
+          nixpkgs-nixos-stable
           sops-nix
           private
           git-hooks-nix
diff --git a/nixos-configurations/calanda/default.nix b/nixos-configurations/calanda/default.nix
index b0109d1..a397319 100644
--- a/nixos-configurations/calanda/default.nix
+++ b/nixos-configurations/calanda/default.nix
@@ -16,5 +16,5 @@
   # this value at the release version of the first install of this system.
   # Before changing this value read the documentation for this option
   # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
-  system.stateVersion = "25.05"; # Did you read the comment?
+  system.stateVersion = "24.11"; # Did you read the comment?
 }
diff --git a/nixos-configurations/cyprianspitz/default.nix b/nixos-configurations/cyprianspitz/default.nix
index a6094df..fd20520 100644
--- a/nixos-configurations/cyprianspitz/default.nix
+++ b/nixos-configurations/cyprianspitz/default.nix
@@ -23,5 +23,5 @@
   # this value at the release version of the first install of this system.
   # Before changing this value read the documentation for this option
   # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
-  system.stateVersion = "25.05"; # Did you read the comment?
+  system.stateVersion = "24.11"; # Did you read the comment?
 }
diff --git a/nixos-configurations/default.nix b/nixos-configurations/default.nix
index 96f9aa1..475d6d5 100644
--- a/nixos-configurations/default.nix
+++ b/nixos-configurations/default.nix
@@ -1,12 +1,12 @@
 {
   self,
   pkgs,
-  nixpkgs,
+  nixpkgs-nixos-stable,
   ...
 }@inputs:
 let
   inherit (pkgs.lib) genAttrs;
-  inherit (nixpkgs.lib) nixosSystem;
+  inherit (nixpkgs-nixos-stable.lib) nixosSystem;
   configs = self.lib.foldersWithNix ./.;
 in
 genAttrs configs (
diff --git a/nixos-configurations/lindberg-build/default.nix b/nixos-configurations/lindberg-build/default.nix
index cd093a4..dc3a626 100644
--- a/nixos-configurations/lindberg-build/default.nix
+++ b/nixos-configurations/lindberg-build/default.nix
@@ -19,5 +19,5 @@
   # this value at the release version of the first install of this system.
   # Before changing this value read the documentation for this option
   # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
-  system.stateVersion = "25.05"; # Did you read the comment?
+  system.stateVersion = "24.11"; # Did you read the comment?
 }
diff --git a/nixos-configurations/lindberg-nextcloud/default.nix b/nixos-configurations/lindberg-nextcloud/default.nix
index eab10d4..3bfc14a 100644
--- a/nixos-configurations/lindberg-nextcloud/default.nix
+++ b/nixos-configurations/lindberg-nextcloud/default.nix
@@ -46,5 +46,5 @@
   # this value at the release version of the first install of this system.
   # Before changing this value read the documentation for this option
   # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
-  system.stateVersion = "25.05"; # Did you read the comment?
+  system.stateVersion = "24.11"; # Did you read the comment?
 }
diff --git a/nixos-configurations/lindberg-webapps/default.nix b/nixos-configurations/lindberg-webapps/default.nix
index d3ba75b..00b64a7 100644
--- a/nixos-configurations/lindberg-webapps/default.nix
+++ b/nixos-configurations/lindberg-webapps/default.nix
@@ -19,5 +19,5 @@
   # this value at the release version of the first install of this system.
   # Before changing this value read the documentation for this option
   # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
-  system.stateVersion = "25.05"; # Did you read the comment?
+  system.stateVersion = "24.11"; # Did you read the comment?
 }
diff --git a/nixos-configurations/lindberg-webapps/disko-config.nix b/nixos-configurations/lindberg-webapps/disko-config.nix
index 6024053..8a7d268 100644
--- a/nixos-configurations/lindberg-webapps/disko-config.nix
+++ b/nixos-configurations/lindberg-webapps/disko-config.nix
@@ -3,7 +3,7 @@
   disko.devices.disk = {
     system = {
       type = "disk";
-      device = "/dev/vdb";
+      device = "/dev/vda";
       content = {
         type = "gpt";
         partitions = {
diff --git a/nixos-configurations/lindberg/default.nix b/nixos-configurations/lindberg/default.nix
index cb2e35c..2bf286c 100644
--- a/nixos-configurations/lindberg/default.nix
+++ b/nixos-configurations/lindberg/default.nix
@@ -24,5 +24,5 @@
   # this value at the release version of the first install of this system.
   # Before changing this value read the documentation for this option
   # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
-  system.stateVersion = "25.05"; # Did you read the comment?
+  system.stateVersion = "24.11"; # Did you read the comment?
 }
diff --git a/nixos-modules/cloud/default.nix b/nixos-modules/cloud/default.nix
index e54f2d7..aaba0ef 100644
--- a/nixos-modules/cloud/default.nix
+++ b/nixos-modules/cloud/default.nix
@@ -3,6 +3,7 @@
   config,
   lib,
   pkgs,
+  options,
   ...
 }:
 
@@ -30,6 +31,10 @@ with lib;
         "nextcloud30"
       ];
     };
+
+    adminpassFile = options.services.nextcloud.config.adminpassFile // {
+      default = config.sops.secrets."nextcloud/admin".path;
+    };
   };
 
   config = mkIf cfg.enable {
@@ -59,7 +64,7 @@ with lib;
       database.createLocally = true;
 
       config = {
-        adminpassFile = config.sops.secrets."nextcloud/admin".path;
+        inherit (cfg) adminpassFile;
         adminuser = "root";
         dbtype = "pgsql";
       };
@@ -83,22 +88,16 @@ with lib;
       };
 
       phpOptions = {
-        "opcache.interned_strings_buffer" = "64";
-        "opcache.memory_consumption" = "512";
-        "opcache.save_comments" = "1";
-        "opcache.max_accelerated_files" = "50000";
-        "opcache.fast_shutdown" = "1";
-        "opcache.jit" = "1255";
-        "opcache.jit_buffer_size" = "8M";
+        "opcache.interned_strings_buffer" = "23";
       };
 
       poolSettings = {
         "pm" = "dynamic";
-        "pm.max_children" = "480";
-        "pm.max_requests" = "2000";
-        "pm.max_spare_servers" = "72";
-        "pm.min_spare_servers" = "24";
-        "pm.start_servers" = "48";
+        "pm.max_children" = "256";
+        "pm.max_requests" = "500";
+        "pm.max_spare_servers" = "16";
+        "pm.min_spare_servers" = "2";
+        "pm.start_servers" = "8";
       };
 
       configureRedis = true;
@@ -122,6 +121,12 @@ with lib;
       };
     };
 
+    services.phpfpm.pools.nextcloud.settings = {
+      "pm.max_children" = lib.mkForce "256";
+      "pm.max_spare_servers" = lib.mkForce "16";
+      "pm.start_servers" = lib.mkForce "8";
+    };
+
     users.users.nextcloud.extraGroups = [ "postdrop" ];
 
     systemd.services.nextcloud-cron = {
diff --git a/nixos-modules/cloud/test.nix b/nixos-modules/cloud/test.nix
new file mode 100644
index 0000000..386dcba
--- /dev/null
+++ b/nixos-modules/cloud/test.nix
@@ -0,0 +1,36 @@
+{
+  ...
+}:
+{
+  # Note: This extends the default configuration from ${self}/checks/nixos-modules
+  nodes.webserver =
+    { pkgs, lib, ... }:
+    let
+      inherit (pkgs) curl gnugrep;
+      inherit (lib) mkForce;
+      cloud-domain = "cloud.example.com";
+    in
+    {
+      qois.cloud = {
+        enable = true;
+        domain = cloud-domain;
+        package = pkgs.nextcloud31;
+        adminpassFile = "${pkgs.writeText "adminpass" "insecure"}"; # Don't try this at home!
+      };
+
+      qois.postgresql.package = pkgs.postgresql;
+      sops.secrets = mkForce { };
+
+      # Disable TLS services
+      services.nginx.virtualHosts."${cloud-domain}" = {
+        forceSSL = mkForce false;
+        enableACME = mkForce false;
+      };
+
+      # Test environment
+      environment.systemPackages = [
+        curl
+        gnugrep
+      ];
+    };
+}
diff --git a/nixos-modules/cloud/test.py b/nixos-modules/cloud/test.py
new file mode 100644
index 0000000..5e484b9
--- /dev/null
+++ b/nixos-modules/cloud/test.py
@@ -0,0 +1,34 @@
+def test(subtest, webserver):
+    webserver.wait_for_unit("nginx")
+    webserver.wait_for_open_port(80)
+    webserver.wait_for_unit("nextcloud-setup.service")
+    webserver.wait_for_unit("phpfpm-nextcloud.service")
+
+    # Helpers
+    def curl_variable_test(node, variable, expected, url):
+        value = node.succeed(
+            f"curl -s --no-location -o /dev/null -w '%{{{variable}}}' '{url}'"
+        )
+        assert value == expected, (
+            f"expected {variable} to be '{expected}' but got '{value}'"
+        )
+
+    def expect_http_code(node, code, url):
+        curl_variable_test(node, "http_code", code, url)
+
+    def expect_http_content_contains(node, expectedContentSnippet, url):
+        content = node.succeed(f"curl --no-location --silent '{url}'")
+        assert expectedContentSnippet in content, f"""
+                expected in content:
+                  {expectedContentSnippet}
+                at {url} but got following content:
+                  {content}
+            """
+
+    # Tests
+    with subtest("website is successfully served on cloud.example.com"):
+        webserver.succeed("grep cloud.example.com /etc/hosts")
+        expect_http_code(webserver, "200", "http://cloud.example.com")
+        expect_http_content_contains(
+            webserver, "Log in to cloud.qoo.is", "http://docs.example.com"
+        )
diff --git a/nixos-modules/static-page/README.md b/nixos-modules/static-page/README.md
index 19469d9..19fce35 100644
--- a/nixos-modules/static-page/README.md
+++ b/nixos-modules/static-page/README.md
@@ -1,5 +1,5 @@
 # Static Pages
 
-This module enables static nginx sites, with data served from "/var/lib/nginx-$domain/root".
+This module enables static nginx sites, with data served from "/var/lib/nginx/$domain/root".
 
 To deploy the site, a user `nginx-$domain` is added, of which a `root` profile in the home folder can be deployed, e.g. with deploy-rs.
diff --git a/packages/sops-config/default.nix b/packages/sops-config/default.nix
index 74e5c79..9655950 100644
--- a/packages/sops-config/default.nix
+++ b/packages/sops-config/default.nix
@@ -75,7 +75,7 @@ writeText ".sops.yaml" (
 
         # Secrets for all hosts
         {
-          path_regex = "private/nixos-modules/shared-secrets/default\.sops\.(yaml|json|env|ini)$";
+          path_regex = "private/nixos-configurations/secrets\.sops\.(yaml|json|env|ini)$";
           pgp = toCommaList userPgpKeys;
           age = toCommaList (userAgeKeys ++ builtins.attrValues serverAgeKeys);
         }
diff --git a/private b/private
index 5f8ba20..bed7588 160000
--- a/private
+++ b/private
@@ -1 +1 @@
-Subproject commit 5f8ba2025848dd30539c42ef1f7e6c6f917e70d9
+Subproject commit bed7588246ec58aacac3d0ff5b191fa6cc9faa98