diff --git a/pkgs/development/python-modules/fst-pso/default.nix b/pkgs/development/python-modules/fst-pso/default.nix
index 3096bb743d11..6deb524307de 100644
--- a/pkgs/development/python-modules/fst-pso/default.nix
+++ b/pkgs/development/python-modules/fst-pso/default.nix
@@ -5,21 +5,25 @@
   miniful,
   numpy,
   pythonOlder,
+  setuptools,
 }:
 
 buildPythonPackage rec {
   pname = "fst-pso";
-  version = "1.8.1";
-  format = "setuptools";
+  version = "1.9.0";
+  pyproject = true;
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
-    inherit pname version;
-    hash = "sha256-s9FuwnsLTTazWzBq9AwAzQs05eCp4wpx7QJJDolUomo=";
+    pname = "fst_pso";
+    inherit version;
+    hash = "sha256-znf1A/Vcz5ELFGFrpDzdj8O3XEDxpu+mCCb35GfWqN8=";
   };
 
-  propagatedBuildInputs = [
+  build-system = [ setuptools ];
+
+  dependencies = [
     miniful
     numpy
   ];
@@ -32,7 +36,8 @@ buildPythonPackage rec {
   meta = with lib; {
     description = "Fuzzy Self-Tuning PSO global optimization library";
     homepage = "https://github.com/aresio/fst-pso";
-    license = with licenses; [ lgpl3Only ];
+    changelog = "https://github.com/aresio/fst-pso/releases/tag/${version}";
+    license = licenses.lgpl3Only;
     maintainers = with maintainers; [ fab ];
   };
 }
diff --git a/pkgs/development/python-modules/pyfume/default.nix b/pkgs/development/python-modules/pyfume/default.nix
index b79bf238d48c..e6649fb17153 100644
--- a/pkgs/development/python-modules/pyfume/default.nix
+++ b/pkgs/development/python-modules/pyfume/default.nix
@@ -27,6 +27,7 @@ buildPythonPackage rec {
   nativeBuildInputs = [ setuptools ];
 
   pythonRelaxDeps = [
+    "fst-pso"
     "numpy"
     "pandas"
     "scipy"
@@ -50,7 +51,7 @@ buildPythonPackage rec {
     description = "Python package for fuzzy model estimation";
     homepage = "https://github.com/CaroFuchs/pyFUME";
     changelog = "https://github.com/CaroFuchs/pyFUME/releases/tag/${version}";
-    license = with licenses; [ gpl3Only ];
+    license = licenses.gpl3Only;
     maintainers = with maintainers; [ fab ];
   };
 }