diff --git a/modules/python/generator/visp_python_bindgen/generator.py b/modules/python/generator/visp_python_bindgen/generator.py
index 5b80634664..a8b8aea0e5 100644
--- a/modules/python/generator/visp_python_bindgen/generator.py
+++ b/modules/python/generator/visp_python_bindgen/generator.py
@@ -138,7 +138,7 @@ def generate_module(generate_path: Path, config_path: Path) -> None:
 
   # Step 3: write to main.cpp the call to the submodule binding implementations.
   main_path = generate_path / 'main.cpp'
-  with open(main_path, 'w') as main_file:
+  with open(main_path, 'w', encoding='utf-8') as main_file:
     submodule_fn_declarations = []
     submodule_fn_calls = []
     for submodule in submodules:
diff --git a/modules/python/generator/visp_python_bindgen/header.py b/modules/python/generator/visp_python_bindgen/header.py
index 0bd3ab3ce9..4b7ff3c1e6 100644
--- a/modules/python/generator/visp_python_bindgen/header.py
+++ b/modules/python/generator/visp_python_bindgen/header.py
@@ -153,7 +153,7 @@ def run_preprocessor(self):
           # if 'visp3' in matches.group() or 'opencv' in matches.group():
           #   tmp_file_content.append(line)
 
-    with open(tmp_file_path.absolute(), 'w') as tmp_file:
+    with open(tmp_file_path.absolute(), 'w', encoding='utf-8') as tmp_file:
       tmp_file.write(''.join(tmp_file_content))
       tmp_file.flush()
 
diff --git a/modules/python/generator/visp_python_bindgen/submodule.py b/modules/python/generator/visp_python_bindgen/submodule.py
index 67146fad32..5d373bc817 100644
--- a/modules/python/generator/visp_python_bindgen/submodule.py
+++ b/modules/python/generator/visp_python_bindgen/submodule.py
@@ -81,7 +81,7 @@ def _get_config_file_or_create_default(self, path: Path) -> Dict:
         'enums': {},
         'config_includes': []
       }
-      with open(path, 'w') as config_file:
+      with open(path, 'w', encoding='utf-8') as config_file:
         json.dump(default_config, config_file)
       return default_config
     else:
@@ -195,7 +195,7 @@ def generate(self) -> None:
 {bindings}
 }}
 '''
-    with open(self.submodule_file_path, 'w') as submodule_file:
+    with open(self.submodule_file_path, 'w', encoding='utf-8') as submodule_file:
       submodule_file.write(format_str)
 
     logs_path = self.submodule_file_path.parent.parent / 'logs'