diff --git a/Makefile b/Makefile
index d04cd9761d..69f34c79ea 100644
--- a/Makefile
+++ b/Makefile
@@ -44,6 +44,8 @@ style:	## update code style.
 
 lint:	## run pylint linter.
 	pylint ${target_dirs}
+	black ${target_dirs} --check
+	isort ${target_dirs} --check-only
 
 system-deps:	## install linux system deps
 	sudo apt-get install -y libsndfile1-dev
diff --git a/pyproject.toml b/pyproject.toml
index 0941a90681..b775f12ab3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,7 +6,7 @@ max-line-length=120
 
 [tool.black]
 line-length = 120
-target-version = ['py38']
+target-version = ['py39']
 exclude = '''
 
 (