diff --git a/pkgs/by-name/la/lacus/package.nix b/pkgs/by-name/la/lacus/package.nix
index 1bef9b506093..0f62ff18fed5 100644
--- a/pkgs/by-name/la/lacus/package.nix
+++ b/pkgs/by-name/la/lacus/package.nix
@@ -5,21 +5,21 @@
 
 python3.pkgs.buildPythonApplication rec {
   pname = "lacus";
-  version = "1.8.0";
+  version = "1.9.0";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "ail-project";
     repo = "lacus";
     rev = "refs/tags/v${version}";
-    hash = "sha256-3sgTt3SsasltChCqHAWyujtUvoLwHWZzfWwlfnJA+zE=";
+    hash = "sha256-VFNW13PupJOroIhqnuLOq3mqU9nXEy1hmjHBQfErSN8=";
   };
 
-  nativeBuildInputs = with python3.pkgs; [
+  build-system = with python3.pkgs; [
     poetry-core
   ];
 
-  propagatedBuildInputs = with python3.pkgs; [
+  dependencies = with python3.pkgs; [
     flask-restx
     gunicorn
     lacuscore