diff --git a/machines/web01/wordpress/addons/default.nix b/machines/web01/wordpress/addons/default.nix
deleted file mode 100644
index 1e9f812..0000000
--- a/machines/web01/wordpress/addons/default.nix
+++ /dev/null
@@ -1,27 +0,0 @@
-{ pkgs, lib, ... }:
-
-let
-  mkWordpressAddon = { name, version, type, hash ? lib.fakeHash }:
-    pkgs.stdenv.mkDerivation {
-      inherit name version;
-
-      src = pkgs.fetchzip {
-        url = "https://downloads.wordpress.org/${type}/${name}.${version}.zip";
-        inherit hash;
-      };
-
-      installPhase = "mkdir -p $out; cp -R * $out/";
-    };
-in {
-  themes = builtins.mapAttrs (name: attrs:
-    mkWordpressAddon ({
-      inherit name;
-      type = "theme";
-    } // attrs)) (import ./themes.nix);
-
-  plugins = builtins.mapAttrs (name: attrs:
-    mkWordpressAddon ({
-      inherit name;
-      type = "plugin";
-    } // attrs)) (import ./plugins.nix);
-}
diff --git a/machines/web01/wordpress/addons/plugins.nix b/machines/web01/wordpress/addons/plugins.nix
deleted file mode 100644
index 493be0c..0000000
--- a/machines/web01/wordpress/addons/plugins.nix
+++ /dev/null
@@ -1,10 +0,0 @@
-{
-  wordpress-importer = {
-    version = "0.8.1";
-    hash = "sha256-vOgAFIapqGTFLMeH7xVPnfRKtKT+E7ToUkcz5/a9f8g=";
-  };
-  user-role-editor = {
-    version = "4.64.1";
-    hash = "sha256-ZOpeY0SMeL6jT6PbGWnGlTADYUY9eUufymfRBqvCVac=";
-  };
-}
diff --git a/machines/web01/wordpress/addons/themes.nix b/machines/web01/wordpress/addons/themes.nix
deleted file mode 100644
index a9c4eef..0000000
--- a/machines/web01/wordpress/addons/themes.nix
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-  avant = {
-    version = "1.2.00";
-    hash = "sha256-xRLIfH5wkwpUtSP3IBtaZM0VCpE4/cwpfM1ypN4G+WE=";
-  };
-}
diff --git a/machines/web01/wordpress/default.nix b/machines/web01/wordpress/default.nix
index efe7a21..07399a1 100644
--- a/machines/web01/wordpress/default.nix
+++ b/machines/web01/wordpress/default.nix
@@ -1,6 +1,6 @@
-{ pkgs, lib, ... }:
+{ pkgs, sources, ... }:
 
-let addons = import ./addons { inherit pkgs lib; };
+let wp4nix = pkgs.callPackage sources.wp4nix { };
 in {
   imports = [ ./module.nix ];
 
@@ -9,25 +9,25 @@ in {
 
     sites = {
       "lavoixduntexte.normalesup.eu" = {
-        themes = { inherit (addons.themes) avant; };
+        themes = { inherit (wp4nix.themes) avant; };
 
-        plugins = { inherit (addons.plugins) wordpress-importer; };
+        plugins = { inherit (wp4nix.plugins) wordpress-importer; };
 
         languages = [ pkgs.wordpressPackages.languages.fr_FR ];
       };
 
       "bds.wp.dgnum.eu" = {
-        plugins = { inherit (addons.plugins) user-role-editor; };
+        plugins = { inherit (wp4nix.plugins) user-role-editor; };
         languages = [ pkgs.wordpressPackages.languages.fr_FR ];
       };
 
       "bda.wp.dgnum.eu" = {
-        plugins = { inherit (addons.plugins) user-role-editor; };
+        plugins = { inherit (wp4nix.plugins) user-role-editor; };
         languages = [ pkgs.wordpressPackages.languages.fr_FR ];
       };
 
       "cineclub.wp.dgnum.eu" = {
-        plugins = { inherit (addons.plugins) user-role-editor; };
+        plugins = { inherit (wp4nix.plugins) user-role-editor; };
         languages = [ pkgs.wordpressPackages.languages.fr_FR ];
       };
     };
diff --git a/npins/sources.json b/npins/sources.json
index 14e13b6..f516000 100644
--- a/npins/sources.json
+++ b/npins/sources.json
@@ -136,6 +136,18 @@
       "url": "https://releases.nixos.org/nixpkgs/nixpkgs-24.05pre565199.63143ac2c918/nixexprs.tar.xz",
       "hash": "04k3q5224dnyn82yacbq9q9gnsrn6ig043mpzpsky885ikg7i2zw"
     },
+    "wp4nix": {
+      "type": "Git",
+      "repository": {
+        "type": "GitLab",
+        "repo_path": "helsinki-systems/wp4nix",
+        "server": "https://git.helsinki.tools/"
+      },
+      "branch": "master",
+      "revision": "9953928aaf564fe0bc952f4396b22132b7f9ff88",
+      "url": "https://git.helsinki.tools/api/v4/projects/helsinki-systems%2Fwp4nix/repository/archive.tar.gz?sha=9953928aaf564fe0bc952f4396b22132b7f9ff88",
+      "hash": "0da528r06765yb0gmc60iflh4xdj3gkf1v604y1a7irip4ydacra"
+    },
     "www-eleves": {
       "type": "Git",
       "repository": {