diff --git a/module.nix b/module.nix
index 76ce7d5..1cd98eb 100644
--- a/module.nix
+++ b/module.nix
@@ -1,8 +1,14 @@
-{ ... }:
+{ lib, ... }:
 
 {
   imports = [
     ./synapse-module
-    ./sliding-sync
+
+    # TODO: Remove after 25.05
+    (lib.mkRemovedOptionModule [ "services" "matrix-synapse" "sliding-sync" ] ''
+      `services.matrix-synapse.sliding-sync` is no longer necessary to use sliding-sync with synapse.
+      As synapse now includes this in itself, if you have a manually managed `.well-known/matrix/client` file
+      remove the proxy url from it.
+    '')
   ];
 }
diff --git a/sliding-sync/default.nix b/sliding-sync/default.nix
deleted file mode 100644
index 04efed3..0000000
--- a/sliding-sync/default.nix
+++ /dev/null
@@ -1,126 +0,0 @@
-{ config, lib, pkgs, ... }:
-
-let
-  cfg = config.services.matrix-synapse.sliding-sync;
-in
-{
-  disabledModules = [ "services/matrix/matrix-sliding-sync.nix" ];
-
-  options.services.matrix-synapse.sliding-sync = {
-    enable = lib.mkEnableOption (lib.mdDoc "sliding sync");
-
-    package = lib.mkOption {
-      type = lib.types.package;
-      default = pkgs.matrix-sliding-sync;
-      description = "What package to use for the sliding-sync proxy.";
-    };
-
-    enableNginx = lib.mkEnableOption (lib.mdDoc "autogenerated nginx config");
-    publicBaseUrl = lib.mkOption {
-      type = lib.types.str;
-      description = "The domain where clients connect, only has an effect with enableNginx";
-      example = "slidingsync.matrix.org";
-    };
-
-    settings = lib.mkOption {
-      type = lib.types.submodule {
-        freeformType = with lib.types; attrsOf str;
-        options = {
-          SYNCV3_SERVER = lib.mkOption {
-            type = lib.types.str;
-            description = lib.mdDoc ''
-              The destination homeserver to talk to not including `/_matrix/` e.g `https://matrix.example.org`.
-            '';
-          };
-
-          SYNCV3_DB = lib.mkOption {
-            type = lib.types.str;
-            default = "postgresql:///matrix-sliding-sync?host=/run/postgresql";
-            description = lib.mdDoc ''
-              The postgres connection string.
-              Refer to <https://www.postgresql.org/docs/current/libpq-connect.html#LIBPQ-CONNSTRING>.
-            '';
-          };
-
-          SYNCV3_BINDADDR = lib.mkOption {
-            type = lib.types.str;
-            default = "127.0.0.1:8009";
-            example = "[::]:8008";
-            description = lib.mdDoc "The interface and port to listen on.";
-          };
-
-          SYNCV3_LOG_LEVEL = lib.mkOption {
-            type = lib.types.enum [ "trace" "debug" "info" "warn" "error" "fatal" ];
-            default = "info";
-            description = lib.mdDoc "The level of verbosity for messages logged.";
-          };
-        };
-      };
-      default = { };
-      description = ''
-        Freeform environment variables passed to the sliding sync proxy.
-        Refer to <https://github.com/matrix-org/sliding-sync#setup> for all supported values.
-      '';
-    };
-
-    createDatabase = lib.mkOption {
-      type = lib.types.bool;
-      default = true;
-      description = lib.mdDoc ''
-        Whether to enable and configure `services.postgres` to ensure that the database user `matrix-sliding-sync`
-        and the database `matrix-sliding-sync` exist.
-      '';
-    };
-
-    environmentFile = lib.mkOption {
-      type = lib.types.str;
-      description = lib.mdDoc ''
-        Environment file as defined in {manpage}`systemd.exec(5)`.
-
-        This must contain the {env}`SYNCV3_SECRET` variable which should
-        be generated with {command}`openssl rand -hex 32`.
-      '';
-    };
-  };
-
-  config = lib.mkIf cfg.enable {
-    warnings = lib.optionals config.services.matrix-synapse-next.enable [
-      ''
-        services.matrix-synapse.sliding-sync is no longer necessary to use sliding-sync with synapse,
-        and the extra module will be removed from `nixos-matrix-modules` in the future.
-        If you are only using this service via `nixos-matrix-modules` you can safely remove options like
-        `services.matrix-synapse.sliding-sync.environmentFile`.
-      ''
-    ];
-
-    services.postgresql = lib.optionalAttrs cfg.createDatabase {
-      enable = true;
-      ensureDatabases = [ "matrix-sliding-sync" ];
-      ensureUsers = [ rec {
-        name = "matrix-sliding-sync";
-        ensureDBOwnership = true;
-      } ];
-    };
-
-    systemd.services.matrix-sliding-sync = {
-      after = lib.optional cfg.createDatabase "postgresql.service";
-      wantedBy = [ "multi-user.target" ];
-      environment = cfg.settings;
-      serviceConfig = {
-        DynamicUser = true;
-        EnvironmentFile = cfg.environmentFile;
-        ExecStart = lib.getExe cfg.package;
-        StateDirectory = "matrix-sliding-sync";
-        WorkingDirectory = "%S/matrix-sliding-sync";
-      };
-    };
-
-    services.nginx.virtualHosts.${cfg.publicBaseUrl} = lib.mkIf cfg.enableNginx {
-      enableACME = lib.mkDefault true;
-      forceSSL = true;
-      locations."/" = {
-        proxyPass = lib.replaceStrings [ "0.0.0.0" "::" ] [ "127.0.0.1" "::1" ] "http://${cfg.settings.SYNCV3_BINDADDR}";
-      };
-    };
-  };
-}