diff --git a/pkgs/development/python-modules/demetriek/default.nix b/pkgs/development/python-modules/demetriek/default.nix
index 6f75104aad5f..b1a7701d9e2f 100644
--- a/pkgs/development/python-modules/demetriek/default.nix
+++ b/pkgs/development/python-modules/demetriek/default.nix
@@ -6,10 +6,11 @@
   backoff,
   buildPythonPackage,
   fetchFromGitHub,
-  fetchpatch,
+  mashumaro,
+  orjson,
   poetry-core,
-  pydantic,
   pytest-asyncio,
+  pytest-cov-stub,
   pytestCheckHook,
   pythonOlder,
   yarl,
@@ -17,55 +18,43 @@
 
 buildPythonPackage rec {
   pname = "demetriek";
-  version = "0.4.0";
+  version = "1.1.0";
   pyproject = true;
 
-  disabled = pythonOlder "3.9";
+  disabled = pythonOlder "3.11";
 
   src = fetchFromGitHub {
     owner = "frenck";
     repo = "python-demetriek";
     tag = "v${version}";
-    hash = "sha256-LCHHBcZgO9gw5jyaJiiS4lKyb0ut+PJvKTylIvIKHhc=";
+    hash = "sha256-MDGAhsLbJqvywQntlPfM/cPyltqsqnt2C31ACpMPn0Y=";
   };
 
-  patches = [
-    # https://github.com/frenck/python-demetriek/pull/531
-    (fetchpatch {
-      name = "pydantic_2-compatibility.patch";
-      url = "https://github.com/frenck/python-demetriek/commit/e677fe5b735b6b28572e3e5fd6aab56fc056f5e6.patch";
-      excludes = [
-        "pyproject.toml"
-        "poetry.lock"
-      ];
-      hash = "sha256-oMVR45KHDhcPId/0X9obJXCPE8s1gk5IgsGsgZesdZw=";
-    })
-  ];
-
   postPatch = ''
     # Upstream doesn't set a version for the pyproject.toml
     substituteInPlace pyproject.toml \
-      --replace "0.0.0" "${version}" \
-      --replace "--cov" ""
+      --replace-fail "0.0.0" "${version}"
   '';
 
   pythonRelaxDeps = [ "pydantic" ];
 
-  nativeBuildInputs = [
+  build-system = [
     poetry-core
   ];
 
-  propagatedBuildInputs = [
+  dependencies = [
     aiohttp
     awesomeversion
     backoff
-    pydantic
+    mashumaro
+    orjson
     yarl
   ];
 
   nativeCheckInputs = [
     aresponses
     pytest-asyncio
+    pytest-cov-stub
     pytestCheckHook
   ];