diff --git a/systems/hetzner/matrix.nix b/systems/hetzner/matrix.nix
new file mode 100644
index 0000000..2f062ce
--- /dev/null
+++ b/systems/hetzner/matrix.nix
@@ -0,0 +1,66 @@
+{config, ...}:
+
+let
+  fqdn = "matrix.missing.ninja";
+  baseUrl = "https://${fqdn}";
+  clientConfig."m.homeserver".base_url = baseUrl;
+  serverConfig."m.server" = "${fqdn}:443";
+  mkWellKnown = data: ''
+    default_type application/json;
+    add_header Access-Control-Allow-Origin *;
+    return 200 '${builtins.toJSON data}';
+  '';
+in
+{
+  services.postgresql.enable = true;
+  services.postgresql.initialScript = pkgs.writeText "synapse-init.sql" ''
+    CREATE ROLE "matrix-synapse" WITH LOGIN PASSWORD 'synapse';
+    CREATE DATABASE "matrix-synapse" WITH OWNER "matrix-synapse"
+      TEMPLATE template0
+      LC_COLLATE = "C"
+      LC_CTYPE = "C";
+  '';
+
+  services.nginx = {
+    enable = true;
+    recommendedTlsSettings = true;
+    recommendedOptimisation = true;
+    recommendedGzipSettings = true;
+    recommendedProxySettings = true;
+    virtualHosts = {
+      "missing.ninja" = {
+        enableACME = true;
+        forceSSL = true;
+        locations."= /.well-known/matrix/server".extraConfig = mkWellKnown serverConfig;
+        locations."= /.well-known/matrix/client".extraConfig = mkWellKnown clientConfig;
+      };
+      "matrix.missing.ninja" = {
+        enableACME = true;
+        forceSSL = true;
+        locations."/".extraConfig = ''
+          return 404;
+        '';
+        locations."/_matrix".proxyPass = "http://[::1]:8008";
+        locations."/_synapse/client".proxyPass = "http://[::1]:8008";
+      };
+    };
+  };
+
+  services.matrix-synapse = {
+    enable = true;
+    settings.server_name = "missing.ninja";
+    settings.public_baseurl = baseUrl;
+    settings.listeners = [
+      { port = 8008;
+        bind_addresses = [ "::1" ];
+        type = "http";
+        tls = false;
+        x_forwarded = true;
+        resources = [ {
+          names = [ "client" "federation" ];
+          compress = true;
+        } ];
+      }
+    ];
+  };
+}