feat(api): api update

.devcontainer/Dockerfile

@@ -1,4 +1,4 @@
-ARG VARIANT="3.9"
+ARG VARIANT="3.10"
 FROM mcr.microsoft.com/vscode/devcontainers/python:0-${VARIANT}
 
 USER vscode

.python-version

@@ -1 +1 @@
-3.9.18
+3.10.18

.stats.yml

@@ -1,3 +1,3 @@
 configured_endpoints: 255
-openapi_spec_hash: 6076b04cad61f32c031d7cd65d3cae66
+openapi_spec_hash: 0d6b366206c803272a353a0bb6942e4a
 config_hash: de151ebd21a0bd391662389b310a8f49

README.md

@@ -3,7 +3,7 @@
 <!-- prettier-ignore -->
 [![PyPI version](https://img.shields.io/pypi/v/increase.svg?label=pypi%20(stable))](https://pypi.org/project/increase/)
 
-The Increase Python library provides convenient access to the Increase REST API from any Python 3.9+
+The Increase Python library provides convenient access to the Increase REST API from any Python 3.10+
 application. The library includes type definitions for all request params and response fields,
 and offers both synchronous and asynchronous clients powered by [httpx](https://github.com/encode/httpx).
 
@@ -362,10 +362,10 @@ In an API response, a field may be explicitly `null`, or missing entirely; in ei
 
 ```py
 if response.my_field is None:
-  if 'my_field' not in response.model_fields_set:
-    print('Got json like {}, without a "my_field" key present at all.')
-  else:
-    print('Got json like {"my_field": null}.')
+    if "my_field" not in response.model_fields_set:
+        print('Got json like {}, without a "my_field" key present at all.')
+    else:
+        print('Got json like {"my_field": null}.')
 ```
 
 ### Accessing raw response data (e.g. headers)
@@ -381,7 +381,7 @@ response = client.accounts.with_raw_response.create(
     entity_id="entity_n8y8tnk2p9339ti393yi",
     program_id="program_i2v2os4mwza1oetokh9i",
 )
-print(response.headers.get('X-My-Header'))
+print(response.headers.get("X-My-Header"))
 
 account = response.parse()  # get the object that `accounts.create()` would have returned
 print(account.id)
@@ -481,8 +481,8 @@ By default the library closes underlying HTTP connections whenever the client is
 from increase import Increase
 
 with Increase() as client:
-  # make requests here
-  ...
+    # make requests here
+    ...
 
 # HTTP client is now closed
 ```
@@ -507,12 +507,13 @@ You can determine the version that is being used at runtime with:
 
 ```py
 import increase
+
 print(increase.__version__)
 ```
 
 ## Requirements
 
-Python 3.9 or higher.
+Python 3.10 or higher.
 
 ## Contributing
 

pyproject.toml

@@ -17,11 +17,10 @@ dependencies = [
   "sniffio",
 ]
 
-requires-python = ">= 3.9"
+requires-python = ">= 3.10"
 classifiers = [
   "Typing :: Typed",
   "Intended Audience :: Developers",
-  "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
@@ -126,7 +125,7 @@ filterwarnings = [
 # there are a couple of flags that are still disabled by
 # default in strict mode as they are experimental and niche.
 typeCheckingMode = "strict"
-pythonVersion = "3.9"
+pythonVersion = "3.10"
 
 exclude = [
     "_dev",

requirements-dev.lock

@@ -1,15 +1,15 @@
 # This file was autogenerated by uv via the following command:
 #    uv export -o requirements-dev.lock --no-hashes
 -e .
-annotated-types==0.7.0
+annotated-types==0.8.0
     # via pydantic
-anyio==4.12.1
+anyio==4.15.1
     # via
     #   httpx
     #   increase
 backports-asyncio-runner==1.2.0 ; python_full_version < '3.11'
     # via pytest-asyncio
-certifi==2026.1.4
+certifi==2026.10.19
     # via
     #   httpcore
     #   httpx
@@ -32,68 +32,54 @@ httpx==0.28.1
     # via
     #   increase
     #   respx
-idna==3.11
+idna==3.20
     # via
     #   anyio
     #   httpx
-importlib-metadata==8.7.1
-iniconfig==2.1.0 ; python_full_version < '3.10'
+importlib-metadata==9.0.1
+iniconfig==2.3.1
     # via pytest
-iniconfig==2.3.0 ; python_full_version >= '3.10'
-    # via pytest
-markdown-it-py==3.0.0 ; python_full_version < '3.10'
-    # via rich
-markdown-it-py==4.0.0 ; python_full_version >= '3.10'
+markdown-it-py==4.2.0
     # via rich
 mdurl==0.1.2
     # via markdown-it-py
 mypy==1.17.0
 mypy-extensions==1.1.0
     # via mypy
-nodeenv==1.10.0
+nodeenv==1.11.0
     # via pyright
-packaging==25.0
+packaging==26.3
     # via pytest
-pathspec==1.0.3
+pathspec==1.1.1
     # via mypy
-pluggy==1.6.0
+pluggy==1.7.0
     # via pytest
-pydantic==2.12.5
+pydantic==2.14.1
     # via increase
-pydantic-core==2.41.5
+pydantic-core==2.50.1
     # via pydantic
-pygments==2.19.2
+pygments==2.21.0
     # via
     #   pytest
     #   rich
 pyright==1.1.399
-pytest==8.4.2 ; python_full_version < '3.10'
-    # via
-    #   pytest-asyncio
-    #   pytest-xdist
-pytest==9.0.2 ; python_full_version >= '3.10'
+pytest==9.1.1
     # via
     #   pytest-asyncio
     #   pytest-xdist
-pytest-asyncio==1.2.0 ; python_full_version < '3.10'
-pytest-asyncio==1.3.0 ; python_full_version >= '3.10'
+pytest-asyncio==1.4.0
 pytest-xdist==3.8.0
-python-dateutil==2.9.0.post0 ; python_full_version < '3.10'
-    # via time-machine
-respx==0.22.0
-rich==14.2.0
-ruff==0.14.13
-six==1.17.0 ; python_full_version < '3.10'
-    # via python-dateutil
+respx==0.23.1
+rich==15.0.0
+ruff==0.17.1
 sniffio==1.3.1
     # via increase
-time-machine==2.19.0 ; python_full_version < '3.10'
-time-machine==3.2.0 ; python_full_version >= '3.10'
-tomli==2.4.0 ; python_full_version < '3.11'
+time-machine==3.5.1
+tomli==2.5.0 ; python_full_version < '3.11'
     # via
     #   mypy
     #   pytest
-typing-extensions==4.15.0
+typing-extensions==4.16.0
     # via
     #   anyio
     #   exceptiongroup
@@ -104,7 +90,7 @@ typing-extensions==4.15.0
     #   pyright
     #   pytest-asyncio
     #   typing-inspection
-typing-inspection==0.4.2
+typing-inspection==0.4.4
     # via pydantic
-zipp==3.23.0
+zipp==4.1.1
     # via importlib-metadata

scripts/test

@@ -56,7 +56,7 @@ export DEFER_PYDANTIC_BUILD=false
 
 # Note that we need to specify the patch version here so that uv
 # won't use unstable (alpha, beta, rc) releases for the tests
-PY_VERSION_MIN=">=3.9.0"
+PY_VERSION_MIN=">=3.10.0"
 PY_VERSION_MAX=">=3.14.0"
 
 function run_tests() {

src/increase/_base_client.py

@@ -1087,6 +1087,7 @@ def _process_response(
         stream_cls: type[Stream[Any]] | type[AsyncStream[Any]] | None,
         retries_taken: int = 0,
     ) -> ResponseT:
+
         origin = get_origin(cast_to) or cast_to
 
         if (
@@ -1672,6 +1673,7 @@ async def _process_response(
         stream_cls: type[Stream[Any]] | type[AsyncStream[Any]] | None,
         retries_taken: int = 0,
     ) -> ResponseT:
+
         origin = get_origin(cast_to) or cast_to
 
         if (

src/increase/_client.py

@@ -735,7 +735,7 @@ def copy(
         return self.__class__(
             api_key=api_key or self.api_key,
             webhook_secret=webhook_secret or self.webhook_secret,
-            base_url=base_url or self.base_url,
+            base_url=base_url or (None if environment is not None else self.base_url),
             environment=environment or self._environment,
             timeout=self.timeout if isinstance(timeout, NotGiven) else timeout,
             http_client=http_client,
@@ -1362,7 +1362,7 @@ def copy(
         return self.__class__(
             api_key=api_key or self.api_key,
             webhook_secret=webhook_secret or self.webhook_secret,
-            base_url=base_url or self.base_url,
+            base_url=base_url or (None if environment is not None else self.base_url),
             environment=environment or self._environment,
             timeout=self.timeout if isinstance(timeout, NotGiven) else timeout,
             http_client=http_client,

src/increase/_models.py

@@ -290,6 +290,7 @@ def model_dump(
             warnings: bool | Literal["none", "warn", "error"] = True,
             fallback: Callable[[Any], Any] | None = None,
             serialize_as_any: bool = False,
+            polymorphic_serialization: bool | None = None,
         ) -> dict[str, Any]:
             """Usage docs: https://docs.pydantic.dev/2.4/concepts/serialization/#modelmodel_dump
 
@@ -315,6 +316,7 @@ def model_dump(
                 fallback: A function to call when an unknown value is encountered. If not provided,
                     a [`PydanticSerializationError`][pydantic_core.PydanticSerializationError] error is raised.
                 serialize_as_any: Whether to serialize fields with duck-typing serialization behavior.
+                polymorphic_serialization: Whether to use model and dataclass polymorphic serialization for this call.
 
             Returns:
                 A dictionary representation of the model.
@@ -333,6 +335,8 @@ def model_dump(
                 raise ValueError("fallback is only supported in Pydantic v2")
             if exclude_computed_fields != False:
                 raise ValueError("exclude_computed_fields is only supported in Pydantic v2")
+            if polymorphic_serialization is not None:
+                raise ValueError("polymorphic_serialization is only supported in Pydantic v2")
             dumped = super().dict(  # pyright: ignore[reportDeprecated]
                 include=include,
                 exclude=exclude,
@@ -362,6 +366,7 @@ def model_dump_json(
             warnings: bool | Literal["none", "warn", "error"] = True,
             fallback: Callable[[Any], Any] | None = None,
             serialize_as_any: bool = False,
+            polymorphic_serialization: bool | None = None,
         ) -> str:
             """Usage docs: https://docs.pydantic.dev/2.4/concepts/serialization/#modelmodel_dump_json
 
@@ -395,6 +400,8 @@ def model_dump_json(
                 raise ValueError("ensure_ascii is only supported in Pydantic v2")
             if exclude_computed_fields != False:
                 raise ValueError("exclude_computed_fields is only supported in Pydantic v2")
+            if polymorphic_serialization is not None:
+                raise ValueError("polymorphic_serialization is only supported in Pydantic v2")
             return super().json(  # type: ignore[reportDeprecated]
                 indent=indent,
                 include=include,

src/increase/resources/simulations/programs.py

@@ -69,7 +69,7 @@ def create(
         Args:
           name: The name of the program being added.
 
-          bank: The bank for the program's accounts, defaults to First Internet Bank.
+          bank: The bank for the program's accounts, defaults to Increase Bank.
 
               - `core_bank` - Core Bank
               - `first_internet_bank` - First Internet Bank of Indiana
@@ -162,7 +162,7 @@ async def create(
         Args:
           name: The name of the program being added.
 
-          bank: The bank for the program's accounts, defaults to First Internet Bank.
+          bank: The bank for the program's accounts, defaults to Increase Bank.
 
               - `core_bank` - Core Bank
               - `first_internet_bank` - First Internet Bank of Indiana