diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3b286e5ae..81f6dc20f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,6 @@ jobs:
   lint:
     name: lint
     runs-on: ubuntu-latest
-
     steps:
       - uses: actions/checkout@v4
 
@@ -33,7 +32,6 @@ jobs:
   test:
     name: test
     runs-on: ubuntu-latest
-
     steps:
       - uses: actions/checkout@v4
 
diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index ee93e8ac5..b69919dfd 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.221.0"
+  ".": "0.222.0"
 }
\ No newline at end of file
diff --git a/.stats.yml b/.stats.yml
index 31b1c0195..853824a8f 100644
--- a/.stats.yml
+++ b/.stats.yml
@@ -1,4 +1,4 @@
 configured_endpoints: 199
-openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/increase%2Fincrease-b21d5da00193c0adcbbc6bb89b6eba07c1b8720b9c383e2496d9c68a9426925e.yml
-openapi_spec_hash: fb8ac77c8609e18634121b86b378f332
+openapi_spec_url: https://storage.googleapis.com/stainless-sdk-openapi-specs/increase%2Fincrease-f3fa36b4bd3a55445fc8f959c9023e2ace20ec8957e492288d45170f1f284ca6.yml
+openapi_spec_hash: 837c92afcea095a3cdd40deca976839c
 config_hash: 20a463ecd33bd32b7b9bc6f4990907ac
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d574be9ea..6bd63e729 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,26 @@
 # Changelog
 
+## 0.222.0 (2025-04-11)
+
+Full Changelog: [v0.221.0...v0.222.0](https://github.com/Increase/increase-python/compare/v0.221.0...v0.222.0)
+
+### Features
+
+* **api:** api update ([882f23a](https://github.com/Increase/increase-python/commit/882f23a04c5e1ffcd70ad8e0606ff239d6f8e4e3))
+* **api:** api update ([37aea5f](https://github.com/Increase/increase-python/commit/37aea5f7013dc8ab8d62af04f2b7242ff865ee6b))
+
+
+### Bug Fixes
+
+* **perf:** optimize some hot paths ([47997d9](https://github.com/Increase/increase-python/commit/47997d9c45f371f53d270ec5b1e2259b4463af9d))
+* **perf:** skip traversing types for NotGiven values ([b49443b](https://github.com/Increase/increase-python/commit/b49443b68419103351123fb86ec38abf3de3d7b2))
+
+
+### Chores
+
+* **internal:** expand CI branch coverage ([#1084](https://github.com/Increase/increase-python/issues/1084)) ([871f3bc](https://github.com/Increase/increase-python/commit/871f3bc1ff3e534707be922b49f1b6c8045cfa30))
+* **internal:** reduce CI branch coverage ([a32531a](https://github.com/Increase/increase-python/commit/a32531a5579b47fe22960e93b8107904a2c84139))
+
 ## 0.221.0 (2025-04-08)
 
 Full Changelog: [v0.220.0...v0.221.0](https://github.com/Increase/increase-python/compare/v0.220.0...v0.221.0)
diff --git a/pyproject.toml b/pyproject.toml
index 3c6d7f17f..bfbd23ae2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "increase"
-version = "0.221.0"
+version = "0.222.0"
 description = "The official Python library for the increase API"
 dynamic = ["readme"]
 license = "Apache-2.0"
diff --git a/src/increase/_utils/_transform.py b/src/increase/_utils/_transform.py
index 3ec620818..b0cc20a73 100644
--- a/src/increase/_utils/_transform.py
+++ b/src/increase/_utils/_transform.py
@@ -5,13 +5,15 @@
 import pathlib
 from typing import Any, Mapping, TypeVar, cast
 from datetime import date, datetime
-from typing_extensions import Literal, get_args, override, get_type_hints
+from typing_extensions import Literal, get_args, override, get_type_hints as _get_type_hints
 
 import anyio
 import pydantic
 
 from ._utils import (
     is_list,
+    is_given,
+    lru_cache,
     is_mapping,
     is_iterable,
 )
@@ -108,6 +110,7 @@ class Params(TypedDict, total=False):
     return cast(_T, transformed)
 
 
+@lru_cache(maxsize=8096)
 def _get_annotated_type(type_: type) -> type | None:
     """If the given type is an `Annotated` type then it is returned, if not `None` is returned.
 
@@ -258,6 +261,11 @@ def _transform_typeddict(
     result: dict[str, object] = {}
     annotations = get_type_hints(expected_type, include_extras=True)
     for key, value in data.items():
+        if not is_given(value):
+            # we don't need to include `NotGiven` values here as they'll
+            # be stripped out before the request is sent anyway
+            continue
+
         type_ = annotations.get(key)
         if type_ is None:
             # we do not have a type annotation for this field, leave it as is
@@ -415,6 +423,11 @@ async def _async_transform_typeddict(
     result: dict[str, object] = {}
     annotations = get_type_hints(expected_type, include_extras=True)
     for key, value in data.items():
+        if not is_given(value):
+            # we don't need to include `NotGiven` values here as they'll
+            # be stripped out before the request is sent anyway
+            continue
+
         type_ = annotations.get(key)
         if type_ is None:
             # we do not have a type annotation for this field, leave it as is
@@ -422,3 +435,13 @@ async def _async_transform_typeddict(
         else:
             result[_maybe_transform_key(key, type_)] = await _async_transform_recursive(value, annotation=type_)
     return result
+
+
+@lru_cache(maxsize=8096)
+def get_type_hints(
+    obj: Any,
+    globalns: dict[str, Any] | None = None,
+    localns: Mapping[str, Any] | None = None,
+    include_extras: bool = False,
+) -> dict[str, Any]:
+    return _get_type_hints(obj, globalns=globalns, localns=localns, include_extras=include_extras)
diff --git a/src/increase/_utils/_typing.py b/src/increase/_utils/_typing.py
index 278749b14..1958820f8 100644
--- a/src/increase/_utils/_typing.py
+++ b/src/increase/_utils/_typing.py
@@ -13,6 +13,7 @@
     get_origin,
 )
 
+from ._utils import lru_cache
 from .._types import InheritsGeneric
 from .._compat import is_union as _is_union
 
@@ -66,6 +67,7 @@ def is_type_alias_type(tp: Any, /) -> TypeIs[typing_extensions.TypeAliasType]:
 
 
 # Extracts T from Annotated[T, ...] or from Required[Annotated[T, ...]]
+@lru_cache(maxsize=8096)
 def strip_annotated_type(typ: type) -> type:
     if is_required_type(typ) or is_annotated_type(typ):
         return strip_annotated_type(cast(type, get_args(typ)[0]))
diff --git a/src/increase/_version.py b/src/increase/_version.py
index 3f6444f3e..c6578183e 100644
--- a/src/increase/_version.py
+++ b/src/increase/_version.py
@@ -1,4 +1,4 @@
 # File generated from our OpenAPI spec by Stainless. See CONTRIBUTING.md for details.
 
 __title__ = "increase"
-__version__ = "0.221.0"  # x-release-please-version
+__version__ = "0.222.0"  # x-release-please-version
diff --git a/src/increase/types/card_payment.py b/src/increase/types/card_payment.py
index dbb24d19e..ccd604870 100644
--- a/src/increase/types/card_payment.py
+++ b/src/increase/types/card_payment.py
@@ -1280,10 +1280,11 @@ class ElementCardRefundCashback(BaseModel):
 
 class ElementCardRefundInterchange(BaseModel):
     amount: str
-    """The interchange amount given as a string containing a decimal number.
-
-    The amount is a positive number if it is credited to Increase (e.g.,
-    settlements) and a negative number if it is debited (e.g., refunds).
+    """
+    The interchange amount given as a string containing a decimal number in major
+    units (so e.g., "3.14" for $3.14). The amount is a positive number if it is
+    credited to Increase (e.g., settlements) and a negative number if it is debited
+    (e.g., refunds).
     """
 
     code: Optional[str] = None
@@ -1961,10 +1962,11 @@ class ElementCardSettlementCashback(BaseModel):
 
 class ElementCardSettlementInterchange(BaseModel):
     amount: str
-    """The interchange amount given as a string containing a decimal number.
-
-    The amount is a positive number if it is credited to Increase (e.g.,
-    settlements) and a negative number if it is debited (e.g., refunds).
+    """
+    The interchange amount given as a string containing a decimal number in major
+    units (so e.g., "3.14" for $3.14). The amount is a positive number if it is
+    credited to Increase (e.g., settlements) and a negative number if it is debited
+    (e.g., refunds).
     """
 
     code: Optional[str] = None
diff --git a/src/increase/types/check_transfer_create_params.py b/src/increase/types/check_transfer_create_params.py
index a87148450..cc7d86ee8 100644
--- a/src/increase/types/check_transfer_create_params.py
+++ b/src/increase/types/check_transfer_create_params.py
@@ -100,6 +100,14 @@ class PhysicalCheck(TypedDict, total=False):
     recipient_name: Required[str]
     """The name that will be printed on the check in the 'To:' field."""
 
+    attachment_file_id: str
+    """The ID of a File to be attached to the check.
+
+    This must have `purpose: check_attachment`. For details on pricing and
+    restrictions, see
+    https://increase.com/documentation/originating-checks#printing-checks .
+    """
+
     check_number: str
     """The check number Increase should print on the check.
 
@@ -118,6 +126,16 @@ class PhysicalCheck(TypedDict, total=False):
     as delivery failed and shred them.
     """
 
+    shipping_method: Literal["usps_first_class", "fedex_overnight"]
+    """How to ship the check.
+
+    For details on pricing, timing, and restrictions, see
+    https://increase.com/documentation/originating-checks#printing-checks .
+
+    - `usps_first_class` - USPS First Class
+    - `fedex_overnight` - FedEx Overnight
+    """
+
     signature_text: str
     """The text that will appear as the signature on the check in cursive font.
 
diff --git a/src/increase/types/transaction.py b/src/increase/types/transaction.py
index 1f765d93f..3f49a6d99 100644
--- a/src/increase/types/transaction.py
+++ b/src/increase/types/transaction.py
@@ -433,10 +433,11 @@ class SourceCardRefundCashback(BaseModel):
 
 class SourceCardRefundInterchange(BaseModel):
     amount: str
-    """The interchange amount given as a string containing a decimal number.
-
-    The amount is a positive number if it is credited to Increase (e.g.,
-    settlements) and a negative number if it is debited (e.g., refunds).
+    """
+    The interchange amount given as a string containing a decimal number in major
+    units (so e.g., "3.14" for $3.14). The amount is a positive number if it is
+    credited to Increase (e.g., settlements) and a negative number if it is debited
+    (e.g., refunds).
     """
 
     code: Optional[str] = None
@@ -1019,10 +1020,11 @@ class SourceCardSettlementCashback(BaseModel):
 
 class SourceCardSettlementInterchange(BaseModel):
     amount: str
-    """The interchange amount given as a string containing a decimal number.
-
-    The amount is a positive number if it is credited to Increase (e.g.,
-    settlements) and a negative number if it is debited (e.g., refunds).
+    """
+    The interchange amount given as a string containing a decimal number in major
+    units (so e.g., "3.14" for $3.14). The amount is a positive number if it is
+    credited to Increase (e.g., settlements) and a negative number if it is debited
+    (e.g., refunds).
     """
 
     code: Optional[str] = None
diff --git a/tests/api_resources/test_check_transfers.py b/tests/api_resources/test_check_transfers.py
index 772927741..a96bae822 100644
--- a/tests/api_resources/test_check_transfers.py
+++ b/tests/api_resources/test_check_transfers.py
@@ -48,6 +48,7 @@ def test_method_create_with_all_params(self, client: Increase) -> None:
                 },
                 "memo": "Check payment",
                 "recipient_name": "Ian Crease",
+                "attachment_file_id": "attachment_file_id",
                 "check_number": "x",
                 "note": "x",
                 "return_address": {
@@ -58,6 +59,7 @@ def test_method_create_with_all_params(self, client: Increase) -> None:
                     "state": "x",
                     "line2": "x",
                 },
+                "shipping_method": "usps_first_class",
                 "signature_text": "Ian Crease",
             },
             require_approval=True,
@@ -331,6 +333,7 @@ async def test_method_create_with_all_params(self, async_client: AsyncIncrease)
                 },
                 "memo": "Check payment",
                 "recipient_name": "Ian Crease",
+                "attachment_file_id": "attachment_file_id",
                 "check_number": "x",
                 "note": "x",
                 "return_address": {
@@ -341,6 +344,7 @@ async def test_method_create_with_all_params(self, async_client: AsyncIncrease)
                     "state": "x",
                     "line2": "x",
                 },
+                "shipping_method": "usps_first_class",
                 "signature_text": "Ian Crease",
             },
             require_approval=True,
diff --git a/tests/test_transform.py b/tests/test_transform.py
index f100b2dc9..bb72d99a9 100644
--- a/tests/test_transform.py
+++ b/tests/test_transform.py
@@ -8,7 +8,7 @@
 
 import pytest
 
-from increase._types import Base64FileInput
+from increase._types import NOT_GIVEN, Base64FileInput
 from increase._utils import (
     PropertyInfo,
     transform as _transform,
@@ -444,3 +444,10 @@ async def test_transform_skipping(use_async: bool) -> None:
     # iterables of ints are converted to a list
     data = iter([1, 2, 3])
     assert await transform(data, Iterable[int], use_async) == [1, 2, 3]
+
+
+@parametrize
+@pytest.mark.asyncio
+async def test_strips_notgiven(use_async: bool) -> None:
+    assert await transform({"foo_bar": "bar"}, Foo1, use_async) == {"fooBar": "bar"}
+    assert await transform({"foo_bar": NOT_GIVEN}, Foo1, use_async) == {}