diff --git a/pkgs/development/python-modules/rtoml/default.nix b/pkgs/development/python-modules/rtoml/default.nix
index 2d2aef6f7226..886073951f10 100644
--- a/pkgs/development/python-modules/rtoml/default.nix
+++ b/pkgs/development/python-modules/rtoml/default.nix
@@ -10,7 +10,7 @@
 
 buildPythonPackage rec {
   pname = "rtoml";
-  version = "0.7";
+  version = "0.8";
 
   disabled = pythonOlder "3.7";
 
@@ -18,13 +18,13 @@ buildPythonPackage rec {
     owner = "samuelcolvin";
     repo = pname;
     rev = "v${version}";
-    sha256 = "sha256-h4vY63pDkrMHt2X244FssLxHsphsfjNd6gnVFUeZZTY=";
+    sha256 = "sha256-tvX4KcQGw0khBjEXVFmkhsVyAkdr2Bgm6IfD1yGZ37c=";
   };
 
   cargoDeps = rustPlatform.fetchCargoTarball {
     inherit src;
     name = "${pname}-${version}";
-    sha256 = "05fwcs6w023ihw3gyihzbnfwjaqy40d6h0z2yas4kqkkvz9x4f8j";
+    sha256 = "sha256-KcF3Z71S7ZNZicViqwpClfT736nYYbKcKWylOP+S3HI=";
   };
 
   nativeBuildInputs = with rustPlatform; [
@@ -50,11 +50,6 @@ buildPythonPackage rec {
     cd tests
   '';
 
-  pytestFlagsArray = [
-    "-W"
-    "ignore::DeprecationWarning"
-  ];
-
   meta = with lib; {
     description = "Rust based TOML library for Python";
     homepage = "https://github.com/samuelcolvin/rtoml";