diff --git a/pkgs/development/python-modules/flasgger/default.nix b/pkgs/development/python-modules/flasgger/default.nix
index dab9287e1b3e5..1cc0d1fb7648e 100644
--- a/pkgs/development/python-modules/flasgger/default.nix
+++ b/pkgs/development/python-modules/flasgger/default.nix
@@ -2,12 +2,15 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
-  fetchpatch,
+
+  # build-system
+  setuptools,
 
   # dependencies
   flask,
   jsonschema,
   mistune,
+  packaging,
   pyyaml,
   six,
   werkzeug,
@@ -19,7 +22,7 @@
 buildPythonPackage rec {
   pname = "flasgger";
   version = "0.9.7.1";
-  format = "setuptools";
+  pyproject = true;
 
   src = fetchFromGitHub {
     owner = "flasgger";
@@ -28,10 +31,13 @@ buildPythonPackage rec {
     hash = "sha256-ULEf9DJiz/S2wKlb/vjGto8VCI0QDcm0pkU5rlOwtiE=";
   };
 
-  propagatedBuildInputs = [
+  build-system = [ setuptools ];
+
+  dependencies = [
     flask
     jsonschema
     mistune
+    packaging
     pyyaml
     six
     werkzeug
@@ -41,7 +47,14 @@ buildPythonPackage rec {
 
   nativeCheckInputs = [ pytestCheckHook ];
 
-  doCheck = false; # missing flex dependency
+  enabledTestPaths = [
+    "tests"
+  ];
+
+  disabledTestPaths = [
+    # missing flex dependency
+    "tests/test_examples.py"
+  ];
 
   meta = with lib; {
     description = "Easy OpenAPI specs and Swagger UI for your Flask API";