diff --git a/pkgs/by-name/yo/yokadi/package.nix b/pkgs/by-name/yo/yokadi/package.nix
index 506143bce85d..8d427f3253b0 100644
--- a/pkgs/by-name/yo/yokadi/package.nix
+++ b/pkgs/by-name/yo/yokadi/package.nix
@@ -7,13 +7,15 @@
 python3Packages.buildPythonApplication rec {
   pname = "yokadi";
   version = "1.3.0";
-  format = "setuptools";
+  pyproject = true;
 
   src = fetchurl {
     url = "https://yokadi.github.io/download/${pname}-${version}.tar.gz";
     hash = "sha256-zF2ffHeU+i7wzu1u4DhQ5zJXr8AjXboiyFAisXNX6TM=";
   };
 
+  build-system = with python3Packages; [ setuptools ];
+
   dependencies = with python3Packages; [
     python-dateutil
     sqlalchemy
@@ -22,6 +24,10 @@ python3Packages.buildPythonApplication rec {
     colorama
   ];
 
+  pythonRelaxDeps = [
+    "python-dateutil"
+  ];
+
   # Yokadi doesn't have any tests
   doCheck = false;