Add Python 3.9 as a target version for Black

Dekker1 · Dekker1 · commit 3f5396027c2e · 2021-10-07T11:50:13.000+11:00
diff --git a/pyproject.toml b/pyproject.toml
@@ -3,7 +3,7 @@ requires = ["setuptools>=41.0", "setuptools-scm", "wheel"]
 build-backend = "setuptools.build_meta"
 
 [tool.black]
-target-version = ['py36', 'py37', 'py38']
+target-version = ['py36', 'py37', 'py38', 'py39']
 
 [tool.isort]
 profile = "black"
