diff --git a/bump_pydantic/main.py b/bump_pydantic/main.py
index 6d4d93b..39a45ab 100644
--- a/bump_pydantic/main.py
+++ b/bump_pydantic/main.py
@@ -82,7 +82,7 @@ def main(
             progress.advance(task)
 
             # Visitor logic
-            code = Path(filename).read_text()
+            code = Path(filename).read_text(encoding="utf8")
             module = cst.parse_module(code)
             module_and_package = calculate_module_and_package(str(package), filename)