diff --git a/sdk/python/packages/flet-cli/src/flet_cli/utils/pyproject_toml.py b/sdk/python/packages/flet-cli/src/flet_cli/utils/pyproject_toml.py
index 0d06e3555c..05e5f5b894 100644
--- a/sdk/python/packages/flet-cli/src/flet_cli/utils/pyproject_toml.py
+++ b/sdk/python/packages/flet-cli/src/flet_cli/utils/pyproject_toml.py
@@ -8,7 +8,7 @@ def load_pyproject_toml(project_dir: Path):
     pyproject_toml: Optional[dict[str, Any]] = {}
     pyproject_toml_file = project_dir.joinpath("pyproject.toml")
     if pyproject_toml_file.exists():
-        with pyproject_toml_file.open("r") as f:
+        with pyproject_toml_file.open("r", encoding="utf-8") as f:
             pyproject_toml = toml.loads(f.read())
 
     def get_pyproject(setting: Optional[str] = None):