diff --git a/tools/release/setup_project.py b/tools/release/setup_project.py
index 890af18c05..02e45dfe3f 100644
--- a/tools/release/setup_project.py
+++ b/tools/release/setup_project.py
@@ -46,7 +46,7 @@ def update_pyproject(version_path: str, pyproject_path: str):
     pyproject_data["project"]["urls"]["Release notes"] = f"https://docs.taipy.io/en/release-{version_string}/relnotes/"
     pyproject_data["project"]["dependencies"] = get_requirements(get_pkg_name(pyproject_path))
 
-    with open(pyproject_path, "w") as pyproject_file:
+    with open(pyproject_path, "w", encoding="utf-8") as pyproject_file:
         toml.dump(pyproject_data, pyproject_file)