diff --git a/ld_openfeature/impl/context_converter.py b/ld_openfeature/impl/context_converter.py
index 5fca4a4..7c4c8ac 100644
--- a/ld_openfeature/impl/context_converter.py
+++ b/ld_openfeature/impl/context_converter.py
@@ -1,8 +1,8 @@
 from logging import getLogger
-from typing import Any, Dict, List, Optional
+from typing import Any, Dict, List, Mapping, Optional
 
 from ldclient.context import Context, ContextBuilder, ContextMultiBuilder
-from openfeature.evaluation_context import EvaluationContext
+from openfeature.evaluation_context import EvaluationContext, EvaluationContextAttribute
 
 
 logger = getLogger("launchdarkly-openfeature-server")
@@ -78,7 +78,7 @@ def __build_multi_context(self, context: EvaluationContext) -> Context:
 
         return builder.build()
 
-    def __build_single_context(self, attributes: Dict, kind: str, key: str) -> Context:
+    def __build_single_context(self, attributes: Mapping[str, EvaluationContextAttribute], kind: str, key: str) -> Context:
         builder = ContextBuilder(key)
         builder.kind(kind)
 
diff --git a/ld_openfeature/provider.py b/ld_openfeature/provider.py
index 28f5e4f..5865b98 100644
--- a/ld_openfeature/provider.py
+++ b/ld_openfeature/provider.py
@@ -1,12 +1,12 @@
 import threading
-from typing import Any, List, Optional, Union
+from typing import Any, List, Mapping, Optional, Sequence, Union
 
 from ldclient.evaluation import EvaluationDetail
 from ldclient import LDClient, Config
 from ldclient.interfaces import DataSourceStatus, FlagChange, DataSourceState
 from openfeature.evaluation_context import EvaluationContext
 from openfeature.exception import ErrorCode, ProviderFatalError
-from openfeature.flag_evaluation import FlagResolutionDetails, FlagType, Reason
+from openfeature.flag_evaluation import FlagResolutionDetails, FlagType, FlagValueType, Reason
 from openfeature.hook import Hook
 from openfeature.provider.metadata import Metadata
 from openfeature.provider import AbstractProvider
@@ -133,7 +133,9 @@ def resolve_float_details(
     def resolve_object_details(
         self,
         flag_key: str,
-        default_value: Union[dict, list],
+        default_value: Union[
+            Sequence[FlagValueType], Mapping[str, FlagValueType]
+        ],
         evaluation_context: Optional[EvaluationContext] = None,
     ) -> FlagResolutionDetails[Union[dict, list]]:
         """Resolves the flag value for the provided flag key as a list or dictionary"""
@@ -154,15 +156,15 @@ def __resolve_value(self, flag_type: FlagType, flag_key: str, default_value: Any
         resolved_value = self.__validate_and_cast_value(flag_type, result.value)
         if resolved_value is None:
             return self.__mismatched_type_details(default_value)
-        
+
         resolved_detail = EvaluationDetail(
             value=resolved_value,
             variation_index=result.variation_index,
             reason=result.reason,
         )
-        
+
         return self.__details_converter.to_resolution_details(resolved_detail)
-    
+
     def __validate_and_cast_value(self, flag_type: FlagType, value: Any):
         """Serializes the raw flag value to the expected type based on flag_type."""
         if flag_type == FlagType.BOOLEAN and isinstance(value, bool):
@@ -175,7 +177,7 @@ def __validate_and_cast_value(self, flag_type: FlagType, value: Any):
                 return float(value)
         elif flag_type == FlagType.OBJECT and isinstance(value, (dict, list)):
                 return value
-        return None 
+        return None
 
     @staticmethod
     def __mismatched_type_details(default_value: Any) -> FlagResolutionDetails:
diff --git a/pyproject.toml b/pyproject.toml
index 7757262..34bd7d0 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -28,7 +28,7 @@ packages = [
 
 [tool.poetry.dependencies]
 python = "^3.9"
-openfeature-sdk = ">=0.7.0,<1"
+openfeature-sdk = ">=0.8.0,<1"
 launchdarkly-server-sdk = "<10"
 
 
diff --git a/tests/impl/test_context_converter.py b/tests/impl/test_context_converter.py
index fbdd679..cd0afff 100644
--- a/tests/impl/test_context_converter.py
+++ b/tests/impl/test_context_converter.py
@@ -1,5 +1,6 @@
+from typing import Mapping
 import pytest
-from openfeature.evaluation_context import EvaluationContext
+from openfeature.evaluation_context import EvaluationContext, EvaluationContextAttribute
 
 from ld_openfeature.impl.context_converter import EvaluationContextConverter
 
@@ -49,7 +50,7 @@ def test_invalid_private_attribute_types_are_ignored(context_converter: Evaluati
 
 
 def test_create_multi_context_with_invalid_targeting_key(context_converter: EvaluationContextConverter):
-    attributes = {
+    attributes: Mapping[str, EvaluationContextAttribute] = {
         'kind': 'multi',
         'user': {'targetingKey': False, 'key': 'user-key', 'name': 'User name'},
         'org': {'key': 'org-key', 'name': 'Org name'},
@@ -142,7 +143,7 @@ def test_private_attributes_are_processed_correctly(context_converter: Evaluatio
 
 
 def test_can_create_multi_kind_context(context_converter: EvaluationContextConverter):
-    attributes = {
+    attributes: Mapping[str, EvaluationContextAttribute] = {
         'kind': 'multi',
         'user': {'key': 'user-key', 'name': 'User name'},
         'org': {'key': 'org-key', 'name': 'Org name'},
@@ -167,7 +168,7 @@ def test_can_create_multi_kind_context(context_converter: EvaluationContextConve
 
 
 def test_can_multi_kind_ignores_kind_attribute(context_converter: EvaluationContextConverter):
-    attributes = {
+    attributes: Mapping[str, EvaluationContextAttribute] = {
         'kind': 'multi',
         'user': {'key': 'user-key', 'kind': 'device', 'name': 'User name'},
         'org': {'key': 'org-key', 'name': 'Org name'},
@@ -192,7 +193,7 @@ def test_can_multi_kind_ignores_kind_attribute(context_converter: EvaluationCont
 
 
 def test_multi_context_discards_invalid_single_kind(context_converter: EvaluationContextConverter):
-    attributes = {
+    attributes: Mapping[str, EvaluationContextAttribute] = {
         'kind': 'multi',
         'user': False,
         'org': {'key': 'org-key', 'name': 'Org name'},
@@ -208,7 +209,7 @@ def test_multi_context_discards_invalid_single_kind(context_converter: Evaluatio
 
 
 def test_handles_invalid_nested_contexts(context_converter: EvaluationContextConverter):
-    attributes = {
+    attributes: Mapping[str, EvaluationContextAttribute] = {
         'kind': 'multi',
         'user': 'invalid format',
         'org': False