diff --git a/src/werkzeug/exceptions.py b/src/werkzeug/exceptions.py
index ddb621032..1cd999773 100644
--- a/src/werkzeug/exceptions.py
+++ b/src/werkzeug/exceptions.py
@@ -576,6 +576,8 @@ class MisdirectedRequest(HTTPException):
 
     Indicates that the request was directed to a server that is not able to
     produce a response.
+
+    .. versionadded:: 3.1
     """
 
     code = 421
diff --git a/src/werkzeug/sansio/response.py b/src/werkzeug/sansio/response.py
index 1c32b51de..9fed08625 100644
--- a/src/werkzeug/sansio/response.py
+++ b/src/werkzeug/sansio/response.py
@@ -223,6 +223,9 @@ def set_cookie(
         :param samesite: Limit the scope of the cookie to only be
             attached to requests that are "same-site".
         :param partitioned: If ``True``, the cookie will be partitioned.
+
+        .. versionchanged:: 3.1
+            The ``partitioned`` parameter was added.
         """
         self.headers.add(
             "Set-Cookie",
diff --git a/src/werkzeug/security.py b/src/werkzeug/security.py
index a18381779..3f49ad1b4 100644
--- a/src/werkzeug/security.py
+++ b/src/werkzeug/security.py
@@ -92,6 +92,9 @@ def generate_password_hash(
     :param method: The key derivation function and parameters.
     :param salt_length: The number of characters to generate for the salt.
 
+    .. versionchanged:: 3.1
+        The default iterations for pbkdf2 was increased to 1,000,000.
+
     .. versionchanged:: 2.3
         Scrypt support was added.