diff --git a/symforce/codegen/codegen_util.py b/symforce/codegen/codegen_util.py
index 440c53f0..8165489f 100644
--- a/symforce/codegen/codegen_util.py
+++ b/symforce/codegen/codegen_util.py
@@ -772,7 +772,8 @@ def generate_lcm_types(
     )
 
     # Autoformat generated python files
-    format_util.format_py_dir(python_types_dir)
+    for f in python_types_dir.rglob("*.py"):
+        f.write_text(format_util.format_py(f.read_text(), str(Path(__file__).parent / f.name)))
 
     return result
 
diff --git a/symforce/codegen/format_util.py b/symforce/codegen/format_util.py
index 558f1193..3c4a360e 100644
--- a/symforce/codegen/format_util.py
+++ b/symforce/codegen/format_util.py
@@ -91,21 +91,6 @@ def format_py(file_contents: str, filename: str) -> str:
     return result.stdout
 
 
-def format_py_dir(dirname: T.Openable) -> None:
-    """
-    Autoformat python files in a directory (recursively) in-place
-    """
-    subprocess.run(
-        [find_ruff_bin(), "format", dirname],
-        check=True,
-        # Disable the ruff cache.  This is important for running in a hermetic context like a bazel
-        # test, and shouldn't really hurt other use cases.  If it does, we should work around this
-        # differently.
-        env=dict(os.environ, RUFF_NO_CACHE="true"),
-        text=True,
-    )
-
-
 _rustfmt_path: T.Optional[Path] = None