diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 5252f7107..bcedfd206 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -6,11 +6,11 @@ repos:
       - id: end-of-file-fixer
       - id: trailing-whitespace
   - repo: https://github.com/PyCQA/isort
-    rev: 7.0.0
+    rev: 8.0.1
     hooks:
       - id: isort
   - repo: https://github.com/psf/black-pre-commit-mirror
-    rev: 25.12.0
+    rev: 26.3.1
     hooks:
       - id: black
         args: [--safe, --quiet]
diff --git a/packages/python-ta/tests/test_contracts/test_class_contracts.py b/packages/python-ta/tests/test_contracts/test_class_contracts.py
index 0fc015d0a..3f01facb9 100644
--- a/packages/python-ta/tests/test_contracts/test_class_contracts.py
+++ b/packages/python-ta/tests/test_contracts/test_class_contracts.py
@@ -295,12 +295,9 @@ def test_create_margherita_invalid() -> None:
     with pytest.raises(AssertionError) as excinfo:
         Pizza.margherita(0)
     msg = str(excinfo.value)
-    assert (
-        "0 \
+    assert "0 \
         < self.radius \
-            <= 10"
-        in msg
-    )
+            <= 10" in msg
 
 
 def test_circle_area_valid() -> None:
diff --git a/packages/python-ta/tests/test_z3_visitor.py b/packages/python-ta/tests/test_z3_visitor.py
index 6b32e3b59..4da06517c 100644
--- a/packages/python-ta/tests/test_z3_visitor.py
+++ b/packages/python-ta/tests/test_z3_visitor.py
@@ -18,8 +18,7 @@ def f(x: int, y: float, z: bool, a: str):
 """
 
 # test cases for arithmetic expressions
-arithmetic_list = [
-    """
+arithmetic_list = ["""
     def f(x: int, y: int, z: float, a):
         '''
         Preconditions:
@@ -28,12 +27,10 @@ def f(x: int, y: int, z: float, a):
             - x + y != z
         '''
         pass
-    """
-]
+    """]
 
 # test cases for boolean expressions
-boolean_list = [
-    """
+boolean_list = ["""
     def f(x: bool, y: bool, z: bool, a):
         '''
         Preconditions:
@@ -41,8 +38,7 @@ def f(x: bool, y: bool, z: bool, a):
             - not (x or y or z)
         '''
         pass
-    """
-]
+    """]
 
 # test cases for container (list/set/tuple) expressions
 container_list = [