diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 416ed70..809648f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -61,7 +61,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        python-version: ['3.10', '3.11', '3.12', '3.13', '3.14']
+        python-version: ['3.10', '3.11', '3.12', '3.13', '3.14', '3.15']
 
     runs-on: ${{ matrix.os }}
 
diff --git a/README.md b/README.md
index 7df1a72..50015fb 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # python devtools
 
-[![CI](https://github.com/samuelcolvin/python-devtools/workflows/CI/badge.svg?event=push)](https://github.com/samuelcolvin/python-devtools/actions?query=event%3Apush+branch%3Amain+workflow%3ACI)
+[![CI](https://img.shields.io/github/actions/workflow/status/samuelcolvin/python-devtools/ci.yml?branch=main&logo=github&label=CI)](https://github.com/samuelcolvin/python-devtools/actions?query=event%3Apush+branch%3Amain+workflow%3ACI)
 [![Coverage](https://coverage-badge.samuelcolvin.workers.dev/samuelcolvin/python-devtools.svg)](https://coverage-badge.samuelcolvin.workers.dev/redirect/samuelcolvin/python-devtools)
 [![pypi](https://img.shields.io/pypi/v/devtools.svg)](https://pypi.python.org/pypi/devtools)
 [![versions](https://img.shields.io/pypi/pyversions/devtools.svg)](https://github.com/samuelcolvin/python-devtools)
diff --git a/docs/index.md b/docs/index.md
index 2a3bd48..c1f2a3b 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -1,6 +1,6 @@
 # Python devtools
 
-[![CI](https://github.com/samuelcolvin/python-devtools/workflows/CI/badge.svg?event=push)](https://github.com/samuelcolvin/python-devtools/actions?query=event%3Apush+branch%3Amain+workflow%3ACI)
+[![CI](https://img.shields.io/github/actions/workflow/status/samuelcolvin/python-devtools/ci.yml?branch=main&logo=github&label=CI)](https://github.com/samuelcolvin/python-devtools/actions?query=event%3Apush+branch%3Amain+workflow%3ACI)
 [![Coverage](https://coverage-badge.samuelcolvin.workers.dev/samuelcolvin/python-devtools.svg)](https://coverage-badge.samuelcolvin.workers.dev/redirect/samuelcolvin/python-devtools)
 [![pypi](https://img.shields.io/pypi/v/devtools.svg)](https://pypi.python.org/pypi/devtools)
 [![versions](https://img.shields.io/pypi/pyversions/devtools.svg)](https://github.com/samuelcolvin/python-devtools)
diff --git a/pyproject.toml b/pyproject.toml
index 28c6b5b..30891c2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,6 +27,7 @@ classifiers = [
     'Programming Language :: Python :: 3.12',
     'Programming Language :: Python :: 3.13',
     'Programming Language :: Python :: 3.14',
+    'Programming Language :: Python :: 3.15',
     'Topic :: Software Development :: Libraries :: Python Modules',
     'Topic :: Internet',
     'Typing :: Typed',
diff --git a/tests/test_prettier.py b/tests/test_prettier.py
index 4a3c4ea..3f9b3c8 100644
--- a/tests/test_prettier.py
+++ b/tests/test_prettier.py
@@ -1,7 +1,6 @@
 import ast
 import os
 import string
-import sys
 from collections import Counter, OrderedDict
 from collections.abc import Iterator
 from dataclasses import dataclass
@@ -456,40 +455,14 @@ class User(SQLAlchemyBase):
     )
 
 
-@pytest.mark.skipif(sys.version_info < (3, 9), reason='no indent on older versions')
 def test_ast_expr():
-    if sys.version_info >= (3, 13):
-        # ast.dump omits empty lists from 3.13 onwards
-        expected = (
-            'Expression('
-            '\n    body=Call('
-            "\n        func=Name(id='print', ctx=Load()),"
-            '\n        args=['
-            '\n            Constant(value=1),'
-            '\n            Constant(value=2),'
-            '\n            Call('
-            "\n                func=Name(id='round', ctx=Load()),"
-            '\n                args=['
-            '\n                    Constant(value=3)])]))'
-        )
-    else:
-        expected = (
-            'Expression('
-            '\n    body=Call('
-            "\n        func=Name(id='print', ctx=Load()),"
-            '\n        args=['
-            '\n            Constant(value=1),'
-            '\n            Constant(value=2),'
-            '\n            Call('
-            "\n                func=Name(id='round', ctx=Load()),"
-            '\n                args=['
-            '\n                    Constant(value=3)],'
-            '\n                keywords=[])],'
-            '\n        keywords=[]))'
-        )
-    assert pformat(ast.parse('print(1, 2, round(3))', mode='eval')) == expected
-
-
-@pytest.mark.skipif(sys.version_info < (3, 9), reason='no indent on older versions')
+    node = ast.parse('print(1, 2, round(3))', mode='eval')
+    v = pformat(node)
+    # exactly which fields ast.dump omits changes between python versions, so compare to its own output
+    assert v == ast.dump(node, indent=4)
+    assert v.startswith('Expression(\n    body=Call(\n        func=Name(')
+    assert '\n                    Constant(value=3)' in v
+
+
 def test_ast_module():
     assert pformat(ast.parse('print(1, 2, round(3))')).startswith('Module(\n    body=[')