diff --git a/pkgs/development/python-modules/aiohttp-swagger/default.nix b/pkgs/development/python-modules/aiohttp-swagger/default.nix
index 0b7dc5c6ea2e..d25729fa2fae 100644
--- a/pkgs/development/python-modules/aiohttp-swagger/default.nix
+++ b/pkgs/development/python-modules/aiohttp-swagger/default.nix
@@ -2,6 +2,7 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
+  setuptools,
   aiohttp,
   jinja2,
   markupsafe,
@@ -14,18 +15,22 @@
 buildPythonPackage rec {
   pname = "aiohttp-swagger";
   version = "1.0.15";
-  format = "setuptools";
+  pyproject = true;
 
   disabled = pythonOlder "3.6";
 
   src = fetchFromGitHub {
     owner = "cr0hn";
-    repo = pname;
-    rev = version;
+    repo = "aiohttp-swagger";
+    tag = version;
     hash = "sha256-M43sNpbXWXFRTd549cZhvhO35nBB6OH+ki36BzSk87Q=";
   };
 
-  propagatedBuildInputs = [
+  build-system = [
+    setuptools
+  ];
+
+  dependencies = [
     aiohttp
     jinja2
     markupsafe
@@ -37,22 +42,20 @@ buildPythonPackage rec {
     pytest-aiohttp
   ];
 
-  postPatch = ''
-    substituteInPlace requirements.txt \
-      --replace "markupsafe~=1.1.1" "markupsafe>=1.1.1" \
-      --replace "jinja2~=2.11.2" "jinja2>=2.11.2"
-  '';
+  pythonRelaxDeps = [
+    "markupsafe"
+    "jinja2"
+  ];
 
-  preCheck = ''
-    # The custom client is obsolete
-    rm tests/conftest.py
-  '';
+  disabledTestPaths = [
+    "tests/conftest.py"
+  ];
 
   pythonImportsCheck = [ "aiohttp_swagger" ];
 
-  meta = with lib; {
+  meta = {
     description = "Swagger API Documentation builder for aiohttp";
     homepage = "https://github.com/cr0hn/aiohttp-swagger";
-    license = licenses.mit;
+    license = lib.licenses.mit;
   };
 }