diff --git a/stubs/oauthlib/METADATA.toml b/stubs/oauthlib/METADATA.toml
index 84307529a94b..38c94680a9a8 100644
--- a/stubs/oauthlib/METADATA.toml
+++ b/stubs/oauthlib/METADATA.toml
@@ -1 +1 @@
-version = "3.1.*"
+version = "3.2.*"
diff --git a/stubs/oauthlib/oauthlib/oauth2/rfc6749/clients/base.pyi b/stubs/oauthlib/oauthlib/oauth2/rfc6749/clients/base.pyi
index 1000f338ff7e..7ccbc66bfa17 100644
--- a/stubs/oauthlib/oauthlib/oauth2/rfc6749/clients/base.pyi
+++ b/stubs/oauthlib/oauthlib/oauth2/rfc6749/clients/base.pyi
@@ -21,6 +21,9 @@ class Client:
     redirect_url: Any
     code: Any
     expires_in: Any
+    code_verifier: str
+    code_challenge: str
+    code_challenge_method: str
     def __init__(
         self,
         client_id,
@@ -35,6 +38,9 @@ class Client:
         state: Any | None = ...,
         redirect_url: Any | None = ...,
         state_generator=...,
+        code_verifier: str | None = ...,
+        code_challenge: str | None = ...,
+        code_challenge_method: str | None = ...,
         **kwargs,
     ) -> None: ...
     @property
@@ -71,5 +77,7 @@ class Client:
     ): ...
     def parse_request_body_response(self, body, scope: Any | None = ..., **kwargs): ...
     def prepare_refresh_body(self, body: str = ..., refresh_token: Any | None = ..., scope: Any | None = ..., **kwargs): ...
+    def create_code_verifier(self, length: int) -> str: ...
+    def create_code_challenge(self, code_verifier: str, code_challenge_method: str | None = ...) -> str: ...
     def populate_code_attributes(self, response) -> None: ...
     def populate_token_attributes(self, response) -> None: ...
diff --git a/stubs/oauthlib/oauthlib/oauth2/rfc6749/clients/web_application.pyi b/stubs/oauthlib/oauthlib/oauth2/rfc6749/clients/web_application.pyi
index 054ab27c311b..68bf975ac3cc 100644
--- a/stubs/oauthlib/oauthlib/oauth2/rfc6749/clients/web_application.pyi
+++ b/stubs/oauthlib/oauthlib/oauth2/rfc6749/clients/web_application.pyi
@@ -7,9 +7,22 @@ class WebApplicationClient(Client):
     code: Any
     def __init__(self, client_id, code: Any | None = ..., **kwargs) -> None: ...
     def prepare_request_uri(  # type: ignore[override]
-        self, uri, redirect_uri: Any | None = ..., scope: Any | None = ..., state: Any | None = ..., **kwargs
+        self,
+        uri,
+        redirect_uri: Any | None = ...,
+        scope: Any | None = ...,
+        state: Any | None = ...,
+        code_challenge: str | None = ...,
+        code_challenge_method: str | None = ...,
+        **kwargs,
     ): ...
     def prepare_request_body(  # type: ignore[override]
-        self, code: Any | None = ..., redirect_uri: Any | None = ..., body: str = ..., include_client_id: bool = ..., **kwargs
+        self,
+        code: Any | None = ...,
+        redirect_uri: Any | None = ...,
+        body: str = ...,
+        include_client_id: bool = ...,
+        code_verifier: str | None = ...,
+        **kwargs,
     ): ...
     def parse_request_uri_response(self, uri, state: Any | None = ...): ...  # type: ignore[override]
diff --git a/stubs/oauthlib/oauthlib/oauth2/rfc6749/parameters.pyi b/stubs/oauthlib/oauthlib/oauth2/rfc6749/parameters.pyi
index 2bc064f027a0..ddbec107edb3 100644
--- a/stubs/oauthlib/oauthlib/oauth2/rfc6749/parameters.pyi
+++ b/stubs/oauthlib/oauthlib/oauth2/rfc6749/parameters.pyi
@@ -1,9 +1,19 @@
 from typing import Any
 
 def prepare_grant_uri(
-    uri, client_id, response_type, redirect_uri: Any | None = ..., scope: Any | None = ..., state: Any | None = ..., **kwargs
+    uri,
+    client_id,
+    response_type,
+    redirect_uri: Any | None = ...,
+    scope: Any | None = ...,
+    state: Any | None = ...,
+    code_challenge: str | None = ...,
+    code_challenge_method: str | None = ...,
+    **kwargs,
+): ...
+def prepare_token_request(
+    grant_type, body: str = ..., include_client_id: bool = ..., code_verifier: str | None = ..., **kwargs
 ): ...
-def prepare_token_request(grant_type, body: str = ..., include_client_id: bool = ..., **kwargs): ...
 def prepare_token_revocation_request(
     url, token, token_type_hint: str = ..., callback: Any | None = ..., body: str = ..., **kwargs
 ): ...