diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 1ea2236..63af80b 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -11,13 +11,13 @@ repos:
 
 
   - repo: https://github.com/psf/black-pre-commit-mirror
-    rev: 25.12.0
+    rev: 26.1.0
     hooks:
       - id: black
         args: [--line-length=100]
 
   - repo: https://github.com/kynan/nbstripout
-    rev: 0.8.2
+    rev: 0.9.0
     hooks:
       - id: nbstripout
 
@@ -27,7 +27,7 @@ repos:
       - id: add-trailing-comma
 
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: 'v0.14.11'
+    rev: 'v0.14.14'
     hooks:
       - id: ruff
 
@@ -37,7 +37,7 @@ repos:
       - id: mypy
 
   - repo: https://github.com/streetsidesoftware/cspell-cli
-    rev: v9.4.0
+    rev: v9.6.0
     hooks:
       - id: cspell
         files: src/|docs/(.+).md|docs/source/(.+).ipynb|tests|README.md
diff --git a/src/ap_features/_numba.py b/src/ap_features/_numba.py
index a07cf6c..d5a9d70 100644
--- a/src/ap_features/_numba.py
+++ b/src/ap_features/_numba.py
@@ -11,7 +11,6 @@
 
 from .utils import NUM_COST_TERMS
 
-
 # float_3D_array = numba.types.Array(numba.float64, 3, "C")
 # float_2D_array = numba.types.Array(numba.float64, 2, "C")
 # float_1D_array = numba.types.Array(numba.float64, 1, "C")
diff --git a/src/ap_features/background.py b/src/ap_features/background.py
index a069dee..9e2fc13 100644
--- a/src/ap_features/background.py
+++ b/src/ap_features/background.py
@@ -7,7 +7,6 @@
 
 from .utils import Array
 
-
 logger = logging.getLogger(__name__)
 
 
diff --git a/src/ap_features/features.py b/src/ap_features/features.py
index d666d41..4ebd53b 100644
--- a/src/ap_features/features.py
+++ b/src/ap_features/features.py
@@ -879,14 +879,14 @@ def sigmoid(x, k, x0):
             popt, pcov = curve_fit(sigmoid, t_upstroke, upstroke, method="dogbox")
 
             k, x0 = popt
-            index = None  # type:ignore
+            index = None  # type: ignore
             s = sigmoid(t_upstroke, k, x0)
             value = k / 2
             time_APD20_to_APD80 = apd_up_xy(s, t_upstroke, 20, 80)
 
         else:
             # Find max upstroke
-            index = np.argmax(np.diff(upstroke))  # type:ignore
+            index = np.argmax(np.diff(upstroke))  # type: ignore
             value = np.max(np.diff(upstroke))
             x0 = None
             s = None
diff --git a/tests/test_features.py b/tests/test_features.py
index cf8d2fe..70aba9b 100644
--- a/tests/test_features.py
+++ b/tests/test_features.py
@@ -5,7 +5,6 @@
 import numpy as np
 import pytest
 
-
 here = os.path.dirname(os.path.abspath(__file__))