diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 139517a..89c53a2 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -11,11 +11,11 @@ repos:
     -   id: check-case-conflict
     -   id: check-merge-conflict
 -   repo: https://github.com/psf/black
-    rev: 22.12.0
+    rev: 23.1.0
     hooks:
     -   id: black
 -   repo: https://github.com/pycqa/isort
-    rev: 5.11.4
+    rev: 5.12.0
     hooks:
     -   id: isort
 -   repo: https://github.com/pycqa/flake8
@@ -23,7 +23,7 @@ repos:
     hooks:
     -   id: flake8
 -   repo: https://github.com/pycqa/pydocstyle
-    rev: 6.2.3
+    rev: 6.3.0
     hooks:
       - id: pydocstyle
 -   repo: https://github.com/pre-commit/pygrep-hooks
diff --git a/docs/conf.py b/docs/conf.py
index ecc4551..7a7d41c 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -142,6 +142,7 @@ def run_apidoc(_):
 
 # -- Final Setup -------------------------------------------------------------
 
+
 # https://github.com/rtfd/sphinx_rtd_theme/issues/117
 # launch setup
 def setup(app):  # noqa
diff --git a/nigsp/tests/test_blocks.py b/nigsp/tests/test_blocks.py
index 4c3b8c2..79b40dc 100644
--- a/nigsp/tests/test_blocks.py
+++ b/nigsp/tests/test_blocks.py
@@ -18,7 +18,6 @@
 
 # ### Unit tests
 def test_nifti_to_timeseries(atlastime, atlas):
-
     img_in = nibabel.load(atlas)
     atlas_in = img_in.get_fdata()
     ts_out, atlas_out, img_out = blocks.nifti_to_timeseries(atlastime, atlas)
@@ -35,7 +34,6 @@ def test_nifti_to_timeseries(atlastime, atlas):
 
 @mark.parametrize("ext", [(".nii.gz"), (".csv")])
 def test_export_metrics_txt(ext, sc_mtx, atlas, sdi, testdir):
-
     testdir = join(testdir, "testdir")
     makedirs(testdir, exist_ok=True)
     atlas_in, mask, img = load_nifti_get_mask(atlas, ndim=3)
@@ -61,7 +59,6 @@ def test_export_metrics_txt(ext, sc_mtx, atlas, sdi, testdir):
 
 
 def test_export_metrics_nifti(sc_mtx, atlas, sdi, testdir):
-
     testdir = join(testdir, "testdir")
     makedirs(testdir, exist_ok=True)
     atlas_in, mask, img = load_nifti_get_mask(atlas, ndim=3)
@@ -88,7 +85,6 @@ def test_export_metrics_nifti(sc_mtx, atlas, sdi, testdir):
 
 
 def test_plot_metrics(atlas, sc_mtx, sdi, testdir):
-
     testdir = join(testdir, "testdir")
     makedirs(testdir, exist_ok=True)
     atlas_in, _, img = load_nifti_get_mask(atlas, ndim=3)
diff --git a/nigsp/tests/test_laplacian.py b/nigsp/tests/test_laplacian.py
index 57dc40e..c6eba20 100644
--- a/nigsp/tests/test_laplacian.py
+++ b/nigsp/tests/test_laplacian.py
@@ -52,7 +52,6 @@ def glap(mtx):
 
 @mark.xfail
 def test_normalisation():
-
     L = np.random.rand(4, 4)
     L = (L + L.T) / 2
     d = np.random.rand(4)
@@ -162,7 +161,6 @@ def test_break_normalisation():
 
 
 def test_break_symmetric_normalised_laplacian():
-
     mtx = np.random.rand(4, 4)
 
     d = np.diag(np.ones(4), k=1)
@@ -177,7 +175,6 @@ def test_break_symmetric_normalised_laplacian():
 
 
 def test_break_recomposition():
-
     eivec = np.random.rand(4, 4, 2)
     eival = np.random.rand(4)
 
diff --git a/nigsp/tests/test_metrics.py b/nigsp/tests/test_metrics.py
index b12d03a..55d4b30 100644
--- a/nigsp/tests/test_metrics.py
+++ b/nigsp/tests/test_metrics.py
@@ -11,7 +11,6 @@
 
 # ### Unit tests
 def test_sdi():
-
     ts1 = np.arange(1, 3)[..., np.newaxis]
     ts2 = np.arange(3, 5)[..., np.newaxis]
     ts3 = np.arange(5, 7)[..., np.newaxis]
diff --git a/nigsp/tests/test_objects.py b/nigsp/tests/test_objects.py
index ad784eb..2c22fc8 100644
--- a/nigsp/tests/test_objects.py
+++ b/nigsp/tests/test_objects.py
@@ -19,6 +19,7 @@ def test_SCGraph():
     atlas = rand(4, 3)
     filename = "Laudna.nii.gz"
     ts_split = {"high": rand(4, 6), "low": rand(4, 6)}
+
     # Initialise eigenvec to check zerocross
     def _bonnet(d, x):
         if d == 0: