diff --git a/open_feature/__init__.py b/openfeature/__init__.py
similarity index 100%
rename from open_feature/__init__.py
rename to openfeature/__init__.py
diff --git a/open_feature/_backports/__init__.py b/openfeature/_backports/__init__.py
similarity index 100%
rename from open_feature/_backports/__init__.py
rename to openfeature/_backports/__init__.py
diff --git a/open_feature/_backports/strenum.py b/openfeature/_backports/strenum.py
similarity index 100%
rename from open_feature/_backports/strenum.py
rename to openfeature/_backports/strenum.py
diff --git a/open_feature/_internal/hook_support.py b/openfeature/_internal/hook_support.py
similarity index 95%
rename from open_feature/_internal/hook_support.py
rename to openfeature/_internal/hook_support.py
index 88a88fd2..5fc49956 100644
--- a/open_feature/_internal/hook_support.py
+++ b/openfeature/_internal/hook_support.py
@@ -2,9 +2,9 @@
 import typing
 from functools import reduce
 
-from open_feature.evaluation_context import EvaluationContext
-from open_feature.flag_evaluation import FlagEvaluationDetails, FlagType
-from open_feature.hook import Hook, HookContext, HookType
+from openfeature.evaluation_context import EvaluationContext
+from openfeature.flag_evaluation import FlagEvaluationDetails, FlagType
+from openfeature.hook import Hook, HookContext, HookType
 
 
 def error_hooks(
diff --git a/open_feature/api.py b/openfeature/api.py
similarity index 78%
rename from open_feature/api.py
rename to openfeature/api.py
index db90da37..db9e1476 100644
--- a/open_feature/api.py
+++ b/openfeature/api.py
@@ -1,12 +1,12 @@
 import typing
 
-from open_feature.client import OpenFeatureClient
-from open_feature.evaluation_context import EvaluationContext
-from open_feature.exception import GeneralError
-from open_feature.hook import Hook
-from open_feature.provider.metadata import Metadata
-from open_feature.provider.no_op_provider import NoOpProvider
-from open_feature.provider.provider import AbstractProvider
+from openfeature.client import OpenFeatureClient
+from openfeature.evaluation_context import EvaluationContext
+from openfeature.exception import GeneralError
+from openfeature.hook import Hook
+from openfeature.provider.metadata import Metadata
+from openfeature.provider.no_op_provider import NoOpProvider
+from openfeature.provider.provider import AbstractProvider
 
 _provider: AbstractProvider = NoOpProvider()
 
diff --git a/open_feature/client.py b/openfeature/client.py
similarity index 97%
rename from open_feature/client.py
rename to openfeature/client.py
index 6f5221c6..6275eea4 100644
--- a/open_feature/client.py
+++ b/openfeature/client.py
@@ -2,30 +2,30 @@
 import typing
 from dataclasses import dataclass
 
-from open_feature import api
-from open_feature.evaluation_context import EvaluationContext
-from open_feature.exception import (
+from openfeature import api
+from openfeature.evaluation_context import EvaluationContext
+from openfeature.exception import (
     ErrorCode,
     GeneralError,
     OpenFeatureError,
     TypeMismatchError,
 )
-from open_feature.flag_evaluation import (
+from openfeature.flag_evaluation import (
     FlagEvaluationDetails,
     FlagEvaluationOptions,
     FlagType,
     Reason,
     FlagResolutionDetails,
 )
-from open_feature.hook import Hook, HookContext
-from open_feature.hook.hook_support import (
+from openfeature.hook import Hook, HookContext
+from openfeature.hook.hook_support import (
     after_all_hooks,
     after_hooks,
     before_hooks,
     error_hooks,
 )
-from open_feature.provider.no_op_provider import NoOpProvider
-from open_feature.provider.provider import AbstractProvider
+from openfeature.provider.no_op_provider import NoOpProvider
+from openfeature.provider.provider import AbstractProvider
 
 GetDetailCallable = typing.Union[
     typing.Callable[
diff --git a/open_feature/evaluation_context.py b/openfeature/evaluation_context.py
similarity index 100%
rename from open_feature/evaluation_context.py
rename to openfeature/evaluation_context.py
diff --git a/open_feature/exception.py b/openfeature/exception.py
similarity index 100%
rename from open_feature/exception.py
rename to openfeature/exception.py
diff --git a/open_feature/flag_evaluation.py b/openfeature/flag_evaluation.py
similarity index 90%
rename from open_feature/flag_evaluation.py
rename to openfeature/flag_evaluation.py
index a291b332..e455206c 100644
--- a/open_feature/flag_evaluation.py
+++ b/openfeature/flag_evaluation.py
@@ -2,11 +2,11 @@
 import typing
 from dataclasses import dataclass, field
 
-from open_feature._backports.strenum import StrEnum
-from open_feature.exception import ErrorCode
+from openfeature._backports.strenum import StrEnum
+from openfeature.exception import ErrorCode
 
 if typing.TYPE_CHECKING:  # resolves a circular dependency in type annotations
-    from open_feature.hook import Hook
+    from openfeature.hook import Hook
 
 
 class FlagType(StrEnum):
diff --git a/open_feature/hook/__init__.py b/openfeature/hook/__init__.py
similarity index 95%
rename from open_feature/hook/__init__.py
rename to openfeature/hook/__init__.py
index 1287aa2a..3892597a 100644
--- a/open_feature/hook/__init__.py
+++ b/openfeature/hook/__init__.py
@@ -4,8 +4,8 @@
 from dataclasses import dataclass
 from enum import Enum
 
-from open_feature.evaluation_context import EvaluationContext
-from open_feature.flag_evaluation import FlagEvaluationDetails, FlagType
+from openfeature.evaluation_context import EvaluationContext
+from openfeature.flag_evaluation import FlagEvaluationDetails, FlagType
 
 
 class HookType(Enum):
diff --git a/open_feature/hook/hook_support.py b/openfeature/hook/hook_support.py
similarity index 95%
rename from open_feature/hook/hook_support.py
rename to openfeature/hook/hook_support.py
index 88a88fd2..5fc49956 100644
--- a/open_feature/hook/hook_support.py
+++ b/openfeature/hook/hook_support.py
@@ -2,9 +2,9 @@
 import typing
 from functools import reduce
 
-from open_feature.evaluation_context import EvaluationContext
-from open_feature.flag_evaluation import FlagEvaluationDetails, FlagType
-from open_feature.hook import Hook, HookContext, HookType
+from openfeature.evaluation_context import EvaluationContext
+from openfeature.flag_evaluation import FlagEvaluationDetails, FlagType
+from openfeature.hook import Hook, HookContext, HookType
 
 
 def error_hooks(
diff --git a/open_feature/immutable_dict/__init__.py b/openfeature/immutable_dict/__init__.py
similarity index 100%
rename from open_feature/immutable_dict/__init__.py
rename to openfeature/immutable_dict/__init__.py
diff --git a/open_feature/immutable_dict/mapping_proxy_type.py b/openfeature/immutable_dict/mapping_proxy_type.py
similarity index 89%
rename from open_feature/immutable_dict/mapping_proxy_type.py
rename to openfeature/immutable_dict/mapping_proxy_type.py
index 6bee4924..22c6a76c 100644
--- a/open_feature/immutable_dict/mapping_proxy_type.py
+++ b/openfeature/immutable_dict/mapping_proxy_type.py
@@ -8,7 +8,7 @@ class MappingProxyType(dict):
 
     When upgrading to Python 3.12, you can update all references
     from:
-    `from open_feature.immutable_dict.mapping_proxy_type import MappingProxyType`
+    `from openfeature.immutable_dict.mapping_proxy_type import MappingProxyType`
 
     to:
     `from types import MappingProxyType`
diff --git a/open_feature/provider/__init__.py b/openfeature/provider/__init__.py
similarity index 100%
rename from open_feature/provider/__init__.py
rename to openfeature/provider/__init__.py
diff --git a/open_feature/provider/in_memory_provider.py b/openfeature/provider/in_memory_provider.py
similarity index 90%
rename from open_feature/provider/in_memory_provider.py
rename to openfeature/provider/in_memory_provider.py
index 02237db0..695764af 100644
--- a/open_feature/provider/in_memory_provider.py
+++ b/openfeature/provider/in_memory_provider.py
@@ -1,13 +1,13 @@
 from dataclasses import dataclass
 import typing
 
-from open_feature._backports.strenum import StrEnum
-from open_feature.evaluation_context import EvaluationContext
-from open_feature.exception import ErrorCode
-from open_feature.flag_evaluation import FlagResolutionDetails, Reason
-from open_feature.hook import Hook
-from open_feature.provider.metadata import Metadata
-from open_feature.provider.provider import AbstractProvider
+from openfeature._backports.strenum import StrEnum
+from openfeature.evaluation_context import EvaluationContext
+from openfeature.exception import ErrorCode
+from openfeature.flag_evaluation import FlagResolutionDetails, Reason
+from openfeature.hook import Hook
+from openfeature.provider.metadata import Metadata
+from openfeature.provider.provider import AbstractProvider
 
 PASSED_IN_DEFAULT = "Passed in default"
 
diff --git a/open_feature/provider/metadata.py b/openfeature/provider/metadata.py
similarity index 100%
rename from open_feature/provider/metadata.py
rename to openfeature/provider/metadata.py
diff --git a/open_feature/provider/no_op_metadata.py b/openfeature/provider/no_op_metadata.py
similarity index 74%
rename from open_feature/provider/no_op_metadata.py
rename to openfeature/provider/no_op_metadata.py
index fe799488..f8385c58 100644
--- a/open_feature/provider/no_op_metadata.py
+++ b/openfeature/provider/no_op_metadata.py
@@ -1,6 +1,6 @@
 from dataclasses import dataclass
 
-from open_feature.provider.metadata import Metadata
+from openfeature.provider.metadata import Metadata
 
 
 @dataclass
diff --git a/open_feature/provider/no_op_provider.py b/openfeature/provider/no_op_provider.py
similarity index 85%
rename from open_feature/provider/no_op_provider.py
rename to openfeature/provider/no_op_provider.py
index 4c5fecc3..e1a4f4a2 100644
--- a/open_feature/provider/no_op_provider.py
+++ b/openfeature/provider/no_op_provider.py
@@ -1,11 +1,11 @@
 import typing
 
-from open_feature.evaluation_context import EvaluationContext
-from open_feature.flag_evaluation import FlagResolutionDetails, Reason
-from open_feature.hook import Hook
-from open_feature.provider.metadata import Metadata
-from open_feature.provider.no_op_metadata import NoOpMetadata
-from open_feature.provider.provider import AbstractProvider
+from openfeature.evaluation_context import EvaluationContext
+from openfeature.flag_evaluation import FlagResolutionDetails, Reason
+from openfeature.hook import Hook
+from openfeature.provider.metadata import Metadata
+from openfeature.provider.no_op_metadata import NoOpMetadata
+from openfeature.provider.provider import AbstractProvider
 
 PASSED_IN_DEFAULT = "Passed in default"
 
diff --git a/open_feature/provider/provider.py b/openfeature/provider/provider.py
similarity index 87%
rename from open_feature/provider/provider.py
rename to openfeature/provider/provider.py
index ea31177d..6a59e9cf 100644
--- a/open_feature/provider/provider.py
+++ b/openfeature/provider/provider.py
@@ -1,10 +1,10 @@
 import typing
 from abc import abstractmethod
 
-from open_feature.evaluation_context import EvaluationContext
-from open_feature.flag_evaluation import FlagResolutionDetails
-from open_feature.hook import Hook
-from open_feature.provider.metadata import Metadata
+from openfeature.evaluation_context import EvaluationContext
+from openfeature.flag_evaluation import FlagResolutionDetails
+from openfeature.hook import Hook
+from openfeature.provider.metadata import Metadata
 
 
 class AbstractProvider:
diff --git a/readme.md b/readme.md
index 779f6c08..d05e3957 100644
--- a/readme.md
+++ b/readme.md
@@ -66,8 +66,8 @@ pip install requirements.txt
 In order to use the sdk there is some minor configuration. Follow the script below:
 
 ```python
-from open_feature import api
-from open_feature.provider.no_op_provider import NoOpProvider
+from openfeature import api
+from openfeature.provider.no_op_provider import NoOpProvider
 
 api.set_provider(NoOpProvider())
 open_feature_client = api.get_client()
@@ -103,7 +103,7 @@ In OpenFeature, we refer to this as [`targeting`](https://openfeature.dev/specif
 If the flag system you're using supports targeting, you can provide the input data using the `EvaluationContext`.
 
 ```python
-from open_feature.api import (
+from openfeature.api import (
     get_client,
     get_provider,
     set_provider
@@ -142,7 +142,7 @@ See [here](https://openfeature.dev/ecosystem) for a catalog of available provide
 A hook is a mechanism that allows for adding arbitrary behavior at well-defined points of the flag evaluation life-cycle. Use cases include validating the resolved flag value, modifying or adding data to the evaluation context, logging, telemetry, and tracking.
 
 ```python
-from open_feature.hook import Hook
+from openfeature.hook import Hook
 
 class MyHook(Hook):
     def after(self, hook_context: HookContext, details: FlagEvaluationDetails, hints: dict):
@@ -150,7 +150,7 @@ class MyHook(Hook):
 
 
 # set global hooks at the API-level
-from open_feature.api import add_hooks
+from openfeature.api import add_hooks
 add_hooks([MyHook()])
 
 # or configure them in the client
diff --git a/tests/conftest.py b/tests/conftest.py
index c417272c..6cc940ca 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,7 +1,7 @@
 import pytest
 
-from open_feature import api
-from open_feature.provider.no_op_provider import NoOpProvider
+from openfeature import api
+from openfeature.provider.no_op_provider import NoOpProvider
 
 
 @pytest.fixture(autouse=True)
diff --git a/tests/evaluation_context/test_evaluation_context.py b/tests/evaluation_context/test_evaluation_context.py
index ac3dcf60..2f8fcc69 100644
--- a/tests/evaluation_context/test_evaluation_context.py
+++ b/tests/evaluation_context/test_evaluation_context.py
@@ -1,4 +1,4 @@
-from open_feature.evaluation_context import EvaluationContext
+from openfeature.evaluation_context import EvaluationContext
 
 
 def test_empty_evaluation_context_can_be_merged_with_non_empty_context():
diff --git a/tests/features/data.py b/tests/features/data.py
index b4da35df..8172d259 100644
--- a/tests/features/data.py
+++ b/tests/features/data.py
@@ -1,6 +1,6 @@
-from open_feature.evaluation_context import EvaluationContext
-from open_feature.flag_evaluation import FlagResolutionDetails, Reason
-from open_feature.provider.in_memory_provider import InMemoryFlag
+from openfeature.evaluation_context import EvaluationContext
+from openfeature.flag_evaluation import FlagResolutionDetails, Reason
+from openfeature.provider.in_memory_provider import InMemoryFlag
 
 
 def context_func(flag: InMemoryFlag, evaluation_context: EvaluationContext):
diff --git a/tests/features/steps/steps.py b/tests/features/steps/steps.py
index 702036ed..e20687fc 100644
--- a/tests/features/steps/steps.py
+++ b/tests/features/steps/steps.py
@@ -2,12 +2,12 @@
 
 from behave import given, then, when
 
-from open_feature.api import get_client, set_provider
-from open_feature.client import OpenFeatureClient
-from open_feature.evaluation_context import EvaluationContext
-from open_feature.exception import ErrorCode
-from open_feature.flag_evaluation import FlagEvaluationDetails, Reason
-from open_feature.provider.in_memory_provider import InMemoryProvider
+from openfeature.api import get_client, set_provider
+from openfeature.client import OpenFeatureClient
+from openfeature.evaluation_context import EvaluationContext
+from openfeature.exception import ErrorCode
+from openfeature.flag_evaluation import FlagEvaluationDetails, Reason
+from openfeature.provider.in_memory_provider import InMemoryProvider
 from tests.features.data import IN_MEMORY_FLAGS
 
 # Common step definitions
diff --git a/tests/hook/conftest.py b/tests/hook/conftest.py
index 2671e7fd..5a3d8092 100644
--- a/tests/hook/conftest.py
+++ b/tests/hook/conftest.py
@@ -2,7 +2,7 @@
 
 import pytest
 
-from open_feature.evaluation_context import EvaluationContext
+from openfeature.evaluation_context import EvaluationContext
 
 
 @pytest.fixture()
diff --git a/tests/hook/test_hook_support.py b/tests/hook/test_hook_support.py
index 7b748349..02cfed1c 100644
--- a/tests/hook/test_hook_support.py
+++ b/tests/hook/test_hook_support.py
@@ -1,14 +1,14 @@
 from unittest.mock import ANY
 
-from open_feature.flag_evaluation import FlagEvaluationDetails, FlagType
-from open_feature.hook import HookContext
-from open_feature.hook.hook_support import (
+from openfeature.flag_evaluation import FlagEvaluationDetails, FlagType
+from openfeature.hook import HookContext
+from openfeature.hook.hook_support import (
     after_all_hooks,
     after_hooks,
     before_hooks,
     error_hooks,
 )
-from open_feature.immutable_dict.mapping_proxy_type import MappingProxyType
+from openfeature.immutable_dict.mapping_proxy_type import MappingProxyType
 
 
 def test_error_hooks_run_error_method(mock_hook):
diff --git a/tests/provider/test_in_memory_provider.py b/tests/provider/test_in_memory_provider.py
index 61f4d562..00a9d455 100644
--- a/tests/provider/test_in_memory_provider.py
+++ b/tests/provider/test_in_memory_provider.py
@@ -1,8 +1,8 @@
 from numbers import Number
 
-from open_feature.exception import ErrorCode
-from open_feature.flag_evaluation import FlagResolutionDetails, Reason
-from open_feature.provider.in_memory_provider import InMemoryProvider, InMemoryFlag
+from openfeature.exception import ErrorCode
+from openfeature.flag_evaluation import FlagResolutionDetails, Reason
+from openfeature.provider.in_memory_provider import InMemoryProvider, InMemoryFlag
 
 
 def test_should_return_in_memory_provider_metadata():
diff --git a/tests/provider/test_no_op_provider.py b/tests/provider/test_no_op_provider.py
index b2762392..3876091a 100644
--- a/tests/provider/test_no_op_provider.py
+++ b/tests/provider/test_no_op_provider.py
@@ -1,6 +1,6 @@
 from numbers import Number
 
-from open_feature.provider.no_op_provider import NoOpProvider
+from openfeature.provider.no_op_provider import NoOpProvider
 
 
 def test_should_return_no_op_provider_metadata():
diff --git a/tests/test_api.py b/tests/test_api.py
index 270f7760..17c9edc3 100644
--- a/tests/test_api.py
+++ b/tests/test_api.py
@@ -2,7 +2,7 @@
 
 import pytest
 
-from open_feature.api import (
+from openfeature.api import (
     get_client,
     get_provider,
     set_provider,
@@ -13,11 +13,11 @@
     add_hooks,
     clear_hooks,
 )
-from open_feature.evaluation_context import EvaluationContext
-from open_feature.exception import ErrorCode, GeneralError
-from open_feature.hook import Hook
-from open_feature.provider.metadata import Metadata
-from open_feature.provider.no_op_provider import NoOpProvider
+from openfeature.evaluation_context import EvaluationContext
+from openfeature.exception import ErrorCode, GeneralError
+from openfeature.hook import Hook
+from openfeature.provider.metadata import Metadata
+from openfeature.provider.no_op_provider import NoOpProvider
 
 
 def test_should_not_raise_exception_with_noop_client():
diff --git a/tests/test_client.py b/tests/test_client.py
index 65615a32..79e67d8f 100644
--- a/tests/test_client.py
+++ b/tests/test_client.py
@@ -2,12 +2,12 @@
 
 import pytest
 
-from open_feature.api import add_hooks, clear_hooks
-from open_feature.client import OpenFeatureClient
-from open_feature.exception import ErrorCode, OpenFeatureError
-from open_feature.flag_evaluation import Reason
-from open_feature.hook import Hook
-from open_feature.provider.no_op_provider import NoOpProvider
+from openfeature.api import add_hooks, clear_hooks
+from openfeature.client import OpenFeatureClient
+from openfeature.exception import ErrorCode, OpenFeatureError
+from openfeature.flag_evaluation import Reason
+from openfeature.hook import Hook
+from openfeature.provider.no_op_provider import NoOpProvider
 
 
 @pytest.mark.parametrize(
diff --git a/tests/test_flag_evaluation.py b/tests/test_flag_evaluation.py
index 8baca90e..67608989 100644
--- a/tests/test_flag_evaluation.py
+++ b/tests/test_flag_evaluation.py
@@ -1,5 +1,5 @@
-from open_feature.exception import ErrorCode
-from open_feature.flag_evaluation import FlagEvaluationDetails, Reason
+from openfeature.exception import ErrorCode
+from openfeature.flag_evaluation import FlagEvaluationDetails, Reason
 
 
 def test_evaulation_details_reason_should_be_a_string():