diff --git a/src/codemodder/code_directory.py b/src/codemodder/code_directory.py
index 906f4130..729cea66 100644
--- a/src/codemodder/code_directory.py
+++ b/src/codemodder/code_directory.py
@@ -88,5 +88,5 @@ def match_files(
     return [
         path
         for p in sorted(list(included_files - excluded_files))
-        if (path := Path(parent_path).joinpath(p)).is_file() and path.suffix == ".py"
+        if (path := Path(parent_path).joinpath(p)).is_file()
     ]