diff --git a/pkgs/development/python-modules/pyproject-metadata/default.nix b/pkgs/development/python-modules/pyproject-metadata/default.nix
index 1a51a0b8f8cd..0b0b68fbf732 100644
--- a/pkgs/development/python-modules/pyproject-metadata/default.nix
+++ b/pkgs/development/python-modules/pyproject-metadata/default.nix
@@ -11,7 +11,7 @@
 
 buildPythonPackage rec {
   pname = "pyproject-metadata";
-  version = "0.8.0";
+  version = "0.9.0";
   format = "pyproject";
 
   disabled = pythonOlder "3.7";
@@ -19,7 +19,7 @@ buildPythonPackage rec {
   src = fetchPypi {
     pname = "pyproject_metadata";
     inherit version;
-    hash = "sha256-N21aAHZKwpRApUV5+I5mt9nLfmKdNcNaHHJIv+vJtFU=";
+    hash = "sha256-hRHACkytlmhq9qa0FDQzKYvrlhBak3mv3JsDKPTyYMk=";
   };
 
   build-system = [ flit-core ];