diff --git a/src/vector/_lib.py b/src/vector/_lib.py
index 3be4c305..9c0d94ab 100644
--- a/src/vector/_lib.py
+++ b/src/vector/_lib.py
@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import types
 import typing
 
 from vector._typeutils import FloatArray
@@ -7,8 +8,6 @@
 if typing.TYPE_CHECKING:
     import sympy
 
-import types
-
 
 class Lib:
     def __init__(self, lib: types.ModuleType):