diff --git a/tests/test_highlighter.py b/tests/test_highlighter.py
index c4489f37..804efb36 100644
--- a/tests/test_highlighter.py
+++ b/tests/test_highlighter.py
@@ -5,10 +5,10 @@ from typing import List
 import pytest
 
 from rich.highlighter import (
+    ISO8601Highlighter,
     JSONHighlighter,
     NullHighlighter,
     ReprHighlighter,
-    ISO8601Highlighter,
 )
 from rich.text import Span, Text
 
@@ -37,8 +37,8 @@ highlight_tests = [
             Span(1, 5, "repr.tag_name"),
             Span(5, 8, "repr.tag_contents"),
             Span(8, 9, "repr.tag_end"),
-            Span(6, 8, "repr.number")
-        ]
+            Span(6, 8, "repr.number"),
+        ],
     ),
     (
         "<foo: <bar: 23>>",
@@ -47,8 +47,8 @@ highlight_tests = [
             Span(1, 5, "repr.tag_name"),
             Span(5, 15, "repr.tag_contents"),
             Span(15, 16, "repr.tag_end"),
-            Span(12, 14, "repr.number")
-        ]
+            Span(12, 14, "repr.number"),
+        ],
     ),
     (
         "False True None",