diff --git a/pyproject.toml b/pyproject.toml
index 85b91eb..7aafb35 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,12 @@
 [tool.coverage.run]
 source = ["django_loci"]
 parallel = true
+# To ensure correct coverage, we need to include both
+# "multiprocessing" and "thread" in the concurrency list.
+# This is because Django test suite incorrectly reports coverage
+# when "multiprocessing" is omitted and the "--parallel" flag
+# is used. Similarly, coverage for websocket consumers is
+# incorrect when "thread" is omitted and pytest is used.
 concurrency = ["multiprocessing", "thread"]
 omit = [
     "django_loci/__init__.py",
@@ -13,7 +19,7 @@ extend_exclude = ["**/*.py"]
 
 [tool.isort]
 known_third_party = ["django"]
-known_first_party = ["openwisp_utils"]
+known_first_party = ["django_loci", "openwisp_utils"]
 default_section = "THIRDPARTY"
 line_length = 88
 multi_line_output = 3
diff --git a/setup.cfg b/setup.cfg
index e003786..5a239df 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,8 +1,6 @@
 [bdist_wheel]
 universal=1
 
-
-
 [flake8]
 exclude = migrations,
 	  ./tests/*settings*.py