diff --git a/elasticsearch/dsl/search_base.py b/elasticsearch/dsl/search_base.py
index ad4a56059..c513fc78d 100644
--- a/elasticsearch/dsl/search_base.py
+++ b/elasticsearch/dsl/search_base.py
@@ -698,12 +698,12 @@ def ensure_strings(fields: "InstrumentedField") -> str: ...
 
         @overload
         def ensure_strings(
-            fields: List[Union[str, "InstrumentedField"]]
+            fields: List[Union[str, "InstrumentedField"]],
         ) -> List[str]: ...
 
         @overload
         def ensure_strings(
-            fields: Dict[str, List[Union[str, "InstrumentedField"]]]
+            fields: Dict[str, List[Union[str, "InstrumentedField"]]],
         ) -> Dict[str, List[str]]: ...
 
         def ensure_strings(
@@ -712,7 +712,7 @@ def ensure_strings(
                 "InstrumentedField",
                 List[Union[str, "InstrumentedField"]],
                 Dict[str, List[Union[str, "InstrumentedField"]]],
-            ]
+            ],
         ) -> Union[str, List[str], Dict[str, List[str]]]:
             if isinstance(fields, dict):
                 return {k: ensure_strings(v) for k, v in fields.items()}
diff --git a/noxfile.py b/noxfile.py
index 90172d49e..c9e961900 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -66,7 +66,9 @@ def test_otel(session):
 
 @nox.session()
 def format(session):
-    session.install(".", "black~=24.0", "isort", "flynt", "unasync>=0.6.0", "jinja2")
+    session.install(
+        ".", "black~=25.0", "isort~=6.0", "flynt", "unasync>=0.6.0", "jinja2"
+    )
 
     session.run("python", "utils/run-unasync.py")
     session.run("python", "utils/run-unasync-dsl.py")
@@ -88,9 +90,9 @@ def lint(session):
 
     session.install(
         "flake8",
-        "black~=24.0",
+        "black~=25.0",
         "mypy",
-        "isort",
+        "isort~=6.0",
         "types-requests",
         "types-python-dateutil",
         "unasync>=0.6.0",
diff --git a/test_elasticsearch/test_dsl/test_result.py b/test_elasticsearch/test_dsl/test_result.py
index 46707c715..2acd810d5 100644
--- a/test_elasticsearch/test_dsl/test_result.py
+++ b/test_elasticsearch/test_dsl/test_result.py
@@ -130,7 +130,7 @@ def test_iterating_over_response_gives_you_hits(dummy_response: Dict[str, Any])
 
 
 def test_hits_get_wrapped_to_contain_additional_attrs(
-    dummy_response: Dict[str, Any]
+    dummy_response: Dict[str, Any],
 ) -> None:
     res = response.Response(Search(), dummy_response)
     hits = res.hits
@@ -140,7 +140,7 @@ def test_hits_get_wrapped_to_contain_additional_attrs(
 
 
 def test_hits_provide_dot_and_bracket_access_to_attrs(
-    dummy_response: Dict[str, Any]
+    dummy_response: Dict[str, Any],
 ) -> None:
     res = response.Response(Search(), dummy_response)
     h = res.hits[0]