diff --git a/pkgs/development/python-modules/maubot/default.nix b/pkgs/development/python-modules/maubot/default.nix
index 2b8f15339a51..31a085ef676f 100644
--- a/pkgs/development/python-modules/maubot/default.nix
+++ b/pkgs/development/python-modules/maubot/default.nix
@@ -23,13 +23,17 @@ let
       sqlalchemy = final.buildPythonPackage rec {
         pname = "SQLAlchemy";
         version = "1.3.24";
-        format = "setuptools";
+        pyproject = true;
 
         src = fetchPypi {
           inherit pname version;
           sha256 = "sha256-67t3fL+TEjWbiXv4G6ANrg9ctp+6KhgmXcwYpvXvdRk=";
         };
 
+        build-system = with final; [
+          setuptools
+        ];
+
         postInstall = ''
           sed -e 's:--max-worker-restart=5::g' -i setup.cfg
         '';
@@ -43,7 +47,7 @@ let
   maubot = python.pkgs.buildPythonPackage rec {
     pname = "maubot";
     version = "0.6.0";
-    format = "setuptools";
+    pyproject = true;
 
     src = fetchPypi {
       inherit pname version;
@@ -58,7 +62,11 @@ let
       })
     ];
 
-    propagatedBuildInputs =
+    build-system = with python.pkgs; [
+      setuptools
+    ];
+
+    dependencies =
       with python.pkgs;
       [
         # requirements.txt
@@ -76,7 +84,6 @@ let
         colorama
         questionary
         jinja2
-        setuptools
       ]
       # optional-requirements.txt
       ++ lib.optionals encryptionSupport [
@@ -98,6 +105,11 @@ let
       rm $out/example-config.yaml
     '';
 
+    pythonRelaxDeps = [
+      "bcrypt"
+      "ruamel.yaml"
+    ];
+
     pythonImportsCheck = [
       "maubot"
     ];