diff --git a/stubs/hvac/METADATA.toml b/stubs/hvac/METADATA.toml
index 350f94fbd..a0c9d6f95 100644
--- a/stubs/hvac/METADATA.toml
+++ b/stubs/hvac/METADATA.toml
@@ -1,2 +1,3 @@
 version = "2.1.*"
 upstream_repository = "https://github.com/hvac/hvac"
+requires = ["types-requests"]
diff --git a/stubs/hvac/hvac/adapters.pyi b/stubs/hvac/hvac/adapters.pyi
index 21938560b..024647bc7 100644
--- a/stubs/hvac/hvac/adapters.pyi
+++ b/stubs/hvac/hvac/adapters.pyi
@@ -1,16 +1,19 @@
-from _typeshed import Incomplete
 from abc import ABCMeta, abstractmethod
 from collections.abc import Mapping
-from typing import Any
+from typing import Any, Generic, TypeVar
 from typing_extensions import Self
 
-class Adapter(metaclass=ABCMeta):
+from requests import Response, Session
+
+_R = TypeVar("_R")
+
+class Adapter(Generic[_R], metaclass=ABCMeta):
     @classmethod
-    def from_adapter(cls, adapter: Adapter) -> Self: ...
+    def from_adapter(cls, adapter: Adapter[_R]) -> Self: ...
     base_uri: str
     token: str | None
     namespace: str | None
-    session: bool
+    session: Session
     allow_redirects: bool
     ignore_exceptions: bool
     strict_http: bool
@@ -24,7 +27,7 @@ class Adapter(metaclass=ABCMeta):
         timeout: int = 30,
         proxies: Mapping[str, str] | None = None,
         allow_redirects: bool = True,
-        session: Incomplete | None = None,
+        session: Session | None = None,
         namespace: str | None = None,
         ignore_exceptions: bool = False,
         strict_http: bool = False,
@@ -33,28 +36,30 @@ class Adapter(metaclass=ABCMeta):
     @staticmethod
     def urljoin(*args: object) -> str: ...
     def close(self) -> None: ...
-    def get(self, url: str, **kwargs: Any): ...
-    def post(self, url: str, **kwargs: Any): ...
-    def put(self, url: str, **kwargs: Any): ...
-    def delete(self, url: str, **kwargs: Any): ...
-    def list(self, url: str, **kwargs: Any): ...
-    def head(self, url: str, **kwargs: Any): ...
+    def get(self, url: str, **kwargs: Any) -> _R: ...
+    def post(self, url: str, **kwargs: Any) -> _R: ...
+    def put(self, url: str, **kwargs: Any) -> _R: ...
+    def delete(self, url: str, **kwargs: Any) -> _R: ...
+    def list(self, url: str, **kwargs: Any) -> _R: ...
+    def head(self, url: str, **kwargs: Any) -> _R: ...
     def login(self, url: str, use_token: bool = True, **kwargs: Any): ...
     @abstractmethod
-    def get_login_token(self, response) -> str: ...
+    def get_login_token(self, response: _R) -> str: ...
     @abstractmethod
     def request(
         self, method, url: str, headers: Mapping[str, str] | None = None, raise_exception: bool = True, **kwargs: Any
-    ): ...
+    ) -> _R: ...
 
-class RawAdapter(Adapter):
-    def get_login_token(self, response) -> str: ...
+class _GenericRawAdapter(Adapter[_R]):
+    def get_login_token(self, response: _R) -> str: ...
     def request(
         self, method: str, url: str, headers: Mapping[str, str] | None = None, raise_exception: bool = True, **kwargs: Any
-    ): ...
+    ) -> _R: ...
 
-class JSONAdapter(RawAdapter):
-    def get_login_token(self, response) -> str: ...
-    def request(self, *args: Any, **kwargs: Any): ...
+class RawAdapter(_GenericRawAdapter[Response]): ...
+
+class JSONAdapter(_GenericRawAdapter[Response | dict[Any, Any]]):
+    def get_login_token(self, response: Response | dict[Any, Any]) -> str: ...
+    def request(self, *args: Any, **kwargs: Any) -> Response | dict[Any, Any]: ...
 
 Request = RawAdapter
diff --git a/stubs/hvac/hvac/api/vault_api_category.pyi b/stubs/hvac/hvac/api/vault_api_category.pyi
index 66fe39f99..2162d9bb5 100644
--- a/stubs/hvac/hvac/api/vault_api_category.pyi
+++ b/stubs/hvac/hvac/api/vault_api_category.pyi
@@ -1,6 +1,7 @@
 from abc import ABCMeta, abstractmethod
 from collections.abc import Sequence
 from logging import Logger
+from typing import Any
 
 from hvac.adapters import Adapter
 from hvac.api.vault_api_base import VaultApiBase
@@ -9,12 +10,12 @@ logger: Logger
 
 class VaultApiCategory(VaultApiBase, metaclass=ABCMeta):
     implemented_class_names: Sequence[str]
-    def __init__(self, adapter: Adapter) -> None: ...
+    def __init__(self, adapter: Adapter[Any]) -> None: ...
     def __getattr__(self, item): ...
     @property
-    def adapter(self) -> Adapter: ...
+    def adapter(self) -> Adapter[Any]: ...
     @adapter.setter
-    def adapter(self, adapter: Adapter) -> None: ...
+    def adapter(self, adapter: Adapter[Any]) -> None: ...
     @property
     @abstractmethod
     def implemented_classes(self): ...
diff --git a/stubs/hvac/hvac/v1/__init__.pyi b/stubs/hvac/hvac/v1/__init__.pyi
index 716cdd835..036b640c7 100644
--- a/stubs/hvac/hvac/v1/__init__.pyi
+++ b/stubs/hvac/hvac/v1/__init__.pyi
@@ -16,15 +16,15 @@ class Client:
         proxies: dict[str, str] | None = None,
         allow_redirects: bool = True,
         session: Incomplete | None = None,
-        adapter: type[Adapter] = ...,
+        adapter: type[Adapter[Any]] = ...,
         namespace: Incomplete | None = None,
         **kwargs: Any,
     ) -> None: ...
     def __getattr__(self, name: str) -> Any: ...
     @property
-    def adapter(self) -> Adapter: ...
+    def adapter(self) -> Adapter[Any]: ...
     @adapter.setter
-    def adapter(self, adapter: Adapter) -> None: ...
+    def adapter(self, adapter: Adapter[Any]) -> None: ...
     @property
     def url(self) -> str: ...
     @url.setter