diff --git a/pyproject.toml b/pyproject.toml
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--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,9 @@
+# This file is part of REANA.
+# Copyright (C) 2024 CERN.
+#
+# REANA is free software; you can redistribute it and/or modify it
+# under the terms of the MIT License; see LICENSE file for more details.
+
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"