diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 857ce3a..fb8d96b 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -11,7 +11,7 @@ repos:
     hooks:
       - id: isort
   - repo: https://github.com/psf/black
-    rev: 23.7.0
+    rev: 24.3.0
     hooks:
       - id: black
         language_version: python3
diff --git a/flagsmith/flagsmith.py b/flagsmith/flagsmith.py
index bbfd227..83c2ae4 100644
--- a/flagsmith/flagsmith.py
+++ b/flagsmith/flagsmith.py
@@ -324,9 +324,9 @@ def _get_identity_flags_from_document(
 
     def _get_environment_flags_from_api(self) -> Flags:
         try:
-            json_response: typing.List[
-                typing.Mapping[str, JsonType]
-            ] = self._get_json_response(url=self.environment_flags_url, method="GET")
+            json_response: typing.List[typing.Mapping[str, JsonType]] = (
+                self._get_json_response(url=self.environment_flags_url, method="GET")
+            )
             return Flags.from_api_flags(
                 api_flags=json_response,
                 analytics_processor=self._analytics_processor,
@@ -344,10 +344,10 @@ def _get_identity_flags_from_api(
     ) -> Flags:
         try:
             data = generate_identities_data(identifier, traits)
-            json_response: typing.Dict[
-                str, typing.List[typing.Dict[str, JsonType]]
-            ] = self._get_json_response(
-                url=self.identities_url, method="POST", body=data
+            json_response: typing.Dict[str, typing.List[typing.Dict[str, JsonType]]] = (
+                self._get_json_response(
+                    url=self.identities_url, method="POST", body=data
+                )
             )
             return Flags.from_api_flags(
                 api_flags=json_response["flags"],