diff --git a/aiopenapi3/models/epoch.py b/aiopenapi3/models/epoch.py
deleted file mode 100644
index 1be54f4c..00000000
--- a/aiopenapi3/models/epoch.py
+++ /dev/null
@@ -1,63 +0,0 @@
-from __future__ import annotations
-
-import datetime
-from typing import Any
-from collections.abc import Callable
-
-import pydantic_core.core_schema
-from pydantic import GetJsonSchemaHandler
-from pydantic.json_schema import JsonSchemaValue
-from pydantic_core import CoreSchema, core_schema
-
-EPOCH = datetime.datetime(1970, 1, 1, tzinfo=datetime.timezone.utc)
-
-
-class _Base(datetime.datetime):
-    TYPE: str = ""
-    SCHEMA: pydantic_core.core_schema.CoreSchema
-
-    @classmethod
-    def __get_pydantic_json_schema__(
-        cls, core_schema: core_schema.CoreSchema, handler: GetJsonSchemaHandler
-    ) -> JsonSchemaValue:
-        field_schema: dict[str, Any] = {}
-        field_schema.update(type=cls.TYPE, format="date-time")
-        return field_schema
-
-    @classmethod
-    def __get_pydantic_core_schema__(
-        cls, source: type[Any], handler: Callable[[Any], CoreSchema]
-    ) -> core_schema.CoreSchema:
-        return core_schema.with_info_after_validator_function(
-            cls._validate,
-            cls.SCHEMA,
-            serialization=core_schema.wrap_serializer_function_ser_schema(cls._f, return_schema=cls.SCHEMA),
-        )
-
-    @classmethod
-    def _validate(cls, __input_value: Any, _: Any) -> datetime.datetime:
-        return EPOCH + datetime.timedelta(seconds=__input_value)
-
-    @classmethod
-    def _f(cls, value: Any, serializer: Callable[[Any], Any]) -> Any:  # pragma: no cover
-        raise NotImplementedError(cls)
-
-
-class Number(_Base):
-    TYPE = "number"
-    SCHEMA = core_schema.float_schema()
-
-    @classmethod
-    def _f(cls, value: Any, serializer: Callable[[float], float]) -> float:
-        ts = value.timestamp()
-        return serializer(ts)
-
-
-class Integer(_Base):
-    TYPE = "integer"
-    SCHEMA = core_schema.int_schema()
-
-    @classmethod
-    def _f(cls, value: Any, serializer: Callable[[int], int]) -> int:
-        ts = value.timestamp()
-        return serializer(int(ts))
diff --git a/pyproject.toml b/pyproject.toml
index 09d09888..7757d221 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -64,17 +64,14 @@ requires = ["setuptools>=61", "wheel"]
 build-backend = "setuptools.build_meta"
 
 [tool.setuptools]
-packages = [
-    "aiopenapi3",
-    "aiopenapi3.v20",
-    "aiopenapi3.v30",
-    "aiopenapi3.v31",
-    "aiopenapi3.extra"
-]
-
 # https://github.com/astral-sh/uv/issues/9513#issuecomment-2519527822
 license-files = []
 
+[tool.setuptools.packages.find]
+where = ["src"]
+include = ["aiopenapi3*"]
+namespaces = false
+
 [tool.setuptools.dynamic]
 version = {attr = "aiopenapi3.version.__version__"}
 
diff --git a/aiopenapi3/__init__.py b/src/aiopenapi3/__init__.py
similarity index 100%
rename from aiopenapi3/__init__.py
rename to src/aiopenapi3/__init__.py
diff --git a/aiopenapi3/__main__.py b/src/aiopenapi3/__main__.py
similarity index 100%
rename from aiopenapi3/__main__.py
rename to src/aiopenapi3/__main__.py
diff --git a/aiopenapi3/_types.py b/src/aiopenapi3/_types.py
similarity index 100%
rename from aiopenapi3/_types.py
rename to src/aiopenapi3/_types.py
diff --git a/aiopenapi3/base.py b/src/aiopenapi3/base.py
similarity index 100%
rename from aiopenapi3/base.py
rename to src/aiopenapi3/base.py
diff --git a/aiopenapi3/cli.py b/src/aiopenapi3/cli.py
similarity index 100%
rename from aiopenapi3/cli.py
rename to src/aiopenapi3/cli.py
diff --git a/aiopenapi3/debug.py b/src/aiopenapi3/debug.py
similarity index 100%
rename from aiopenapi3/debug.py
rename to src/aiopenapi3/debug.py
diff --git a/aiopenapi3/errors.py b/src/aiopenapi3/errors.py
similarity index 100%
rename from aiopenapi3/errors.py
rename to src/aiopenapi3/errors.py
diff --git a/aiopenapi3/extra/__init__.py b/src/aiopenapi3/extra/__init__.py
similarity index 100%
rename from aiopenapi3/extra/__init__.py
rename to src/aiopenapi3/extra/__init__.py
diff --git a/aiopenapi3/extra/cookies.py b/src/aiopenapi3/extra/cookies.py
similarity index 100%
rename from aiopenapi3/extra/cookies.py
rename to src/aiopenapi3/extra/cookies.py
diff --git a/aiopenapi3/extra/reduce.py b/src/aiopenapi3/extra/reduce.py
similarity index 100%
rename from aiopenapi3/extra/reduce.py
rename to src/aiopenapi3/extra/reduce.py
diff --git a/aiopenapi3/json.py b/src/aiopenapi3/json.py
similarity index 100%
rename from aiopenapi3/json.py
rename to src/aiopenapi3/json.py
diff --git a/aiopenapi3/loader.py b/src/aiopenapi3/loader.py
similarity index 100%
rename from aiopenapi3/loader.py
rename to src/aiopenapi3/loader.py
diff --git a/aiopenapi3/log.py b/src/aiopenapi3/log.py
similarity index 100%
rename from aiopenapi3/log.py
rename to src/aiopenapi3/log.py
diff --git a/aiopenapi3/me.py b/src/aiopenapi3/me.py
similarity index 100%
rename from aiopenapi3/me.py
rename to src/aiopenapi3/me.py
diff --git a/aiopenapi3/model.py b/src/aiopenapi3/model.py
similarity index 100%
rename from aiopenapi3/model.py
rename to src/aiopenapi3/model.py
diff --git a/aiopenapi3/openapi.py b/src/aiopenapi3/openapi.py
similarity index 100%
rename from aiopenapi3/openapi.py
rename to src/aiopenapi3/openapi.py
diff --git a/aiopenapi3/plugin.py b/src/aiopenapi3/plugin.py
similarity index 100%
rename from aiopenapi3/plugin.py
rename to src/aiopenapi3/plugin.py
diff --git a/aiopenapi3/pydanticv2.py b/src/aiopenapi3/pydanticv2.py
similarity index 100%
rename from aiopenapi3/pydanticv2.py
rename to src/aiopenapi3/pydanticv2.py
diff --git a/aiopenapi3/request.py b/src/aiopenapi3/request.py
similarity index 100%
rename from aiopenapi3/request.py
rename to src/aiopenapi3/request.py
diff --git a/aiopenapi3/v20/__init__.py b/src/aiopenapi3/v20/__init__.py
similarity index 100%
rename from aiopenapi3/v20/__init__.py
rename to src/aiopenapi3/v20/__init__.py
diff --git a/aiopenapi3/v20/general.py b/src/aiopenapi3/v20/general.py
similarity index 100%
rename from aiopenapi3/v20/general.py
rename to src/aiopenapi3/v20/general.py
diff --git a/aiopenapi3/v20/glue.py b/src/aiopenapi3/v20/glue.py
similarity index 100%
rename from aiopenapi3/v20/glue.py
rename to src/aiopenapi3/v20/glue.py
diff --git a/aiopenapi3/v20/info.py b/src/aiopenapi3/v20/info.py
similarity index 100%
rename from aiopenapi3/v20/info.py
rename to src/aiopenapi3/v20/info.py
diff --git a/aiopenapi3/v20/parameter.py b/src/aiopenapi3/v20/parameter.py
similarity index 100%
rename from aiopenapi3/v20/parameter.py
rename to src/aiopenapi3/v20/parameter.py
diff --git a/aiopenapi3/v20/paths.py b/src/aiopenapi3/v20/paths.py
similarity index 100%
rename from aiopenapi3/v20/paths.py
rename to src/aiopenapi3/v20/paths.py
diff --git a/aiopenapi3/v20/root.py b/src/aiopenapi3/v20/root.py
similarity index 100%
rename from aiopenapi3/v20/root.py
rename to src/aiopenapi3/v20/root.py
diff --git a/aiopenapi3/v20/schemas.py b/src/aiopenapi3/v20/schemas.py
similarity index 100%
rename from aiopenapi3/v20/schemas.py
rename to src/aiopenapi3/v20/schemas.py
diff --git a/aiopenapi3/v20/security.py b/src/aiopenapi3/v20/security.py
similarity index 100%
rename from aiopenapi3/v20/security.py
rename to src/aiopenapi3/v20/security.py
diff --git a/aiopenapi3/v20/tag.py b/src/aiopenapi3/v20/tag.py
similarity index 100%
rename from aiopenapi3/v20/tag.py
rename to src/aiopenapi3/v20/tag.py
diff --git a/aiopenapi3/v20/xml.py b/src/aiopenapi3/v20/xml.py
similarity index 100%
rename from aiopenapi3/v20/xml.py
rename to src/aiopenapi3/v20/xml.py
diff --git a/aiopenapi3/v30/__init__.py b/src/aiopenapi3/v30/__init__.py
similarity index 100%
rename from aiopenapi3/v30/__init__.py
rename to src/aiopenapi3/v30/__init__.py
diff --git a/aiopenapi3/v30/components.py b/src/aiopenapi3/v30/components.py
similarity index 100%
rename from aiopenapi3/v30/components.py
rename to src/aiopenapi3/v30/components.py
diff --git a/aiopenapi3/v30/example.py b/src/aiopenapi3/v30/example.py
similarity index 100%
rename from aiopenapi3/v30/example.py
rename to src/aiopenapi3/v30/example.py
diff --git a/aiopenapi3/v30/formdata.py b/src/aiopenapi3/v30/formdata.py
similarity index 100%
rename from aiopenapi3/v30/formdata.py
rename to src/aiopenapi3/v30/formdata.py
diff --git a/aiopenapi3/v30/general.py b/src/aiopenapi3/v30/general.py
similarity index 100%
rename from aiopenapi3/v30/general.py
rename to src/aiopenapi3/v30/general.py
diff --git a/aiopenapi3/v30/glue.py b/src/aiopenapi3/v30/glue.py
similarity index 100%
rename from aiopenapi3/v30/glue.py
rename to src/aiopenapi3/v30/glue.py
diff --git a/aiopenapi3/v30/info.py b/src/aiopenapi3/v30/info.py
similarity index 100%
rename from aiopenapi3/v30/info.py
rename to src/aiopenapi3/v30/info.py
diff --git a/aiopenapi3/v30/media.py b/src/aiopenapi3/v30/media.py
similarity index 100%
rename from aiopenapi3/v30/media.py
rename to src/aiopenapi3/v30/media.py
diff --git a/aiopenapi3/v30/parameter.py b/src/aiopenapi3/v30/parameter.py
similarity index 100%
rename from aiopenapi3/v30/parameter.py
rename to src/aiopenapi3/v30/parameter.py
diff --git a/aiopenapi3/v30/paths.py b/src/aiopenapi3/v30/paths.py
similarity index 100%
rename from aiopenapi3/v30/paths.py
rename to src/aiopenapi3/v30/paths.py
diff --git a/aiopenapi3/v30/root.py b/src/aiopenapi3/v30/root.py
similarity index 100%
rename from aiopenapi3/v30/root.py
rename to src/aiopenapi3/v30/root.py
diff --git a/aiopenapi3/v30/schemas.py b/src/aiopenapi3/v30/schemas.py
similarity index 100%
rename from aiopenapi3/v30/schemas.py
rename to src/aiopenapi3/v30/schemas.py
diff --git a/aiopenapi3/v30/security.py b/src/aiopenapi3/v30/security.py
similarity index 100%
rename from aiopenapi3/v30/security.py
rename to src/aiopenapi3/v30/security.py
diff --git a/aiopenapi3/v30/servers.py b/src/aiopenapi3/v30/servers.py
similarity index 100%
rename from aiopenapi3/v30/servers.py
rename to src/aiopenapi3/v30/servers.py
diff --git a/aiopenapi3/v30/tag.py b/src/aiopenapi3/v30/tag.py
similarity index 100%
rename from aiopenapi3/v30/tag.py
rename to src/aiopenapi3/v30/tag.py
diff --git a/aiopenapi3/v30/xml.py b/src/aiopenapi3/v30/xml.py
similarity index 100%
rename from aiopenapi3/v30/xml.py
rename to src/aiopenapi3/v30/xml.py
diff --git a/aiopenapi3/v31/__init__.py b/src/aiopenapi3/v31/__init__.py
similarity index 100%
rename from aiopenapi3/v31/__init__.py
rename to src/aiopenapi3/v31/__init__.py
diff --git a/aiopenapi3/v31/components.py b/src/aiopenapi3/v31/components.py
similarity index 100%
rename from aiopenapi3/v31/components.py
rename to src/aiopenapi3/v31/components.py
diff --git a/aiopenapi3/v31/example.py b/src/aiopenapi3/v31/example.py
similarity index 100%
rename from aiopenapi3/v31/example.py
rename to src/aiopenapi3/v31/example.py
diff --git a/aiopenapi3/v31/general.py b/src/aiopenapi3/v31/general.py
similarity index 100%
rename from aiopenapi3/v31/general.py
rename to src/aiopenapi3/v31/general.py
diff --git a/aiopenapi3/v31/info.py b/src/aiopenapi3/v31/info.py
similarity index 100%
rename from aiopenapi3/v31/info.py
rename to src/aiopenapi3/v31/info.py
diff --git a/aiopenapi3/v31/media.py b/src/aiopenapi3/v31/media.py
similarity index 100%
rename from aiopenapi3/v31/media.py
rename to src/aiopenapi3/v31/media.py
diff --git a/aiopenapi3/v31/parameter.py b/src/aiopenapi3/v31/parameter.py
similarity index 100%
rename from aiopenapi3/v31/parameter.py
rename to src/aiopenapi3/v31/parameter.py
diff --git a/aiopenapi3/v31/paths.py b/src/aiopenapi3/v31/paths.py
similarity index 100%
rename from aiopenapi3/v31/paths.py
rename to src/aiopenapi3/v31/paths.py
diff --git a/aiopenapi3/v31/root.py b/src/aiopenapi3/v31/root.py
similarity index 100%
rename from aiopenapi3/v31/root.py
rename to src/aiopenapi3/v31/root.py
diff --git a/aiopenapi3/v31/schemas.py b/src/aiopenapi3/v31/schemas.py
similarity index 100%
rename from aiopenapi3/v31/schemas.py
rename to src/aiopenapi3/v31/schemas.py
diff --git a/aiopenapi3/v31/security.py b/src/aiopenapi3/v31/security.py
similarity index 100%
rename from aiopenapi3/v31/security.py
rename to src/aiopenapi3/v31/security.py
diff --git a/aiopenapi3/v31/servers.py b/src/aiopenapi3/v31/servers.py
similarity index 100%
rename from aiopenapi3/v31/servers.py
rename to src/aiopenapi3/v31/servers.py
diff --git a/aiopenapi3/v31/tag.py b/src/aiopenapi3/v31/tag.py
similarity index 100%
rename from aiopenapi3/v31/tag.py
rename to src/aiopenapi3/v31/tag.py
diff --git a/aiopenapi3/v31/xml.py b/src/aiopenapi3/v31/xml.py
similarity index 100%
rename from aiopenapi3/v31/xml.py
rename to src/aiopenapi3/v31/xml.py
diff --git a/aiopenapi3/version.py b/src/aiopenapi3/version.py
similarity index 100%
rename from aiopenapi3/version.py
rename to src/aiopenapi3/version.py