diff --git a/.coveragerc b/.coveragerc
deleted file mode 100644
index e10cdae2..00000000
--- a/.coveragerc
+++ /dev/null
@@ -1,20 +0,0 @@
-[run]
-branch = True
-omit =
-  isort/_vendored/*
-  except ImportError:
-  tests/*
-  isort/deprecated/*
-
-[report]
-exclude_lines =
-  pragma: no cover
-  except ImportError:
-  if TYPE_CHECKING:
-  raise NotImplementedError
-  if __name__ == "__main__":
-
-[paths]
-source = isort/
-  .tox/*/lib/python*/site-packages/isort/
-  .tox\*\Lib\site-packages\isort\
diff --git a/.isort.cfg b/.isort.cfg
deleted file mode 100644
index 545be979..00000000
--- a/.isort.cfg
+++ /dev/null
@@ -1,5 +0,0 @@
-[settings]
-profile=hug
-src_paths=isort,test
-skip=tests/unit/example_crlf_file.py
-
diff --git a/pyproject.toml b/pyproject.toml
index ac23487d..a7114e18 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -90,16 +90,32 @@ vulture = ">=1.0"
 jinja2 = "<3.1.0"
 
 [tool.coverage.paths]
-source = ["src", "*/site-packages"]
+source = [
+    "isort/",
+    ".tox/*/lib/python*/site-packages/isort/",
+    ".tox/*/lib/site-packages/isort/"
+]
 tests = ["tests", "*/tests"]
 
 [tool.coverage.run]
 branch = true
-source = ["git_portfolio", "tests"]
+source = ["isort", "tests"]
+omit = [
+    "isort/_vendored/*",
+    "tests/*",
+    "isort/deprecated/*",
+]
 
 [tool.coverage.report]
 show_missing = true
-fail_under = 100
+fail_under = 99
+exclude_lines = [
+    "pragma: no cover",
+    "except ImportError:",
+    "if TYPE_CHECKING:",
+    "if __name__ == .__main__.:",
+    "raise NotImplementedError",
+]
 
 [tool.poetry.scripts]
 isort = "isort.main:main"
@@ -136,3 +152,10 @@ module = "tests.*"
 allow_untyped_defs = true
 allow_incomplete_defs = true
 allow_untyped_calls = true
+
+[tool.isort]
+profile = "hug"
+src_paths = ["isort", "tests"]
+skip = [
+    "tests/unit/example_crlf_file.py"
+]