diff --git a/pyproject.toml b/pyproject.toml
index a2d21a0..27d40ef 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,7 +5,7 @@ readme = "README.md"
 license = { text = "MIT" }
 keywords = ["graph", "database"]
 version = "0.0.1"
-requires-python = ">=3.10,<3.15"
+requires-python = ">=3.11,<3.16"
 
 [project.urls]
 Homepage = "https://ladybugdb.com/"
@@ -20,7 +20,7 @@ dev = [
     "pandas~=2.2",
     "polars~=1.30",
     "pyarrow>=25",
-    "pybind11~=2.13",
+    "pybind11>=2.13",
     "pytest",
     "pytest-asyncio~=1.0",
     "pytest-xdist~=3.0",
diff --git a/src_py/_lbug_capi.py b/src_py/_lbug_capi.py
index d5f31f0..1097597 100644
--- a/src_py/_lbug_capi.py
+++ b/src_py/_lbug_capi.py
@@ -911,7 +911,7 @@ def _logical_type_to_str(logical_type: _LbugLogicalType) -> str:
 
 def _to_datetime_from_micros(value: int, *, tz_aware: bool = False) -> dt.datetime:
     seconds = value / 1_000_000
-    utc_dt = dt.datetime.fromtimestamp(seconds, tz=dt.timezone.utc)
+    utc_dt = dt.datetime.fromtimestamp(seconds, tz=dt.UTC)
     if tz_aware:
         return utc_dt
     return utc_dt.replace(tzinfo=None)
@@ -1074,7 +1074,7 @@ def _value_from_python(value: Any) -> ctypes.POINTER(_LbugValue):
         if value.tzinfo is not None:
             micros = int(value.timestamp() * 1_000_000)
             return _LIB.lbug_value_create_timestamp_tz(_LbugTimestamp(value=micros))
-        micros = int(value.replace(tzinfo=dt.timezone.utc).timestamp() * 1_000_000)
+        micros = int(value.replace(tzinfo=dt.UTC).timestamp() * 1_000_000)
         return _LIB.lbug_value_create_timestamp(_LbugTimestamp(value=micros))
     if isinstance(value, dt.timedelta):
         total_seconds = value.days * 86400 + value.seconds
@@ -1828,7 +1828,7 @@ def _convert_value(self, value: _LbugValue) -> Any:
                     "Failed to read timestamp_ms",
                 )
                 return dt.datetime.fromtimestamp(
-                    int(out.value) / 1000, tz=dt.timezone.utc
+                    int(out.value) / 1000, tz=dt.UTC
                 ).replace(tzinfo=None)
             if type_id == _LBUG_TIMESTAMP_SEC:
                 out = _LbugTimestamp()
@@ -1838,9 +1838,9 @@ def _convert_value(self, value: _LbugValue) -> Any:
                     ),
                     "Failed to read timestamp_sec",
                 )
-                return dt.datetime.fromtimestamp(
-                    int(out.value), tz=dt.timezone.utc
-                ).replace(tzinfo=None)
+                return dt.datetime.fromtimestamp(int(out.value), tz=dt.UTC).replace(
+                    tzinfo=None
+                )
             if type_id == _LBUG_TIMESTAMP_NS:
                 out = _LbugTimestamp()
                 _check_state(
@@ -1850,7 +1850,7 @@ def _convert_value(self, value: _LbugValue) -> Any:
                     "Failed to read timestamp_ns",
                 )
                 return dt.datetime.fromtimestamp(
-                    int(out.value) / 1_000_000_000, tz=dt.timezone.utc
+                    int(out.value) / 1_000_000_000, tz=dt.UTC
                 ).replace(tzinfo=None)
             if type_id == _LBUG_INTERVAL:
                 out = _LbugInterval()
diff --git a/src_py/async_connection.py b/src_py/async_connection.py
index cbb46f7..50bf371 100644
--- a/src_py/async_connection.py
+++ b/src_py/async_connection.py
@@ -11,17 +11,12 @@
 from .prepared_statement import PreparedStatement
 
 if TYPE_CHECKING:
-    import sys
     from types import TracebackType
+    from typing import Self
 
     from .database import Database
     from .query_result import QueryResult
 
-    if sys.version_info >= (3, 11):
-        from typing import Self
-    else:
-        from typing_extensions import Self
-
 
 class AsyncConnection:
     """AsyncConnection enables asynchronous execution of queries with a pool of connections and threads."""
diff --git a/src_py/connection.py b/src_py/connection.py
index 40327c4..0d5038b 100644
--- a/src_py/connection.py
+++ b/src_py/connection.py
@@ -19,18 +19,13 @@
 from .types import ArrowRelTableLayout
 
 if TYPE_CHECKING:
-    import sys
     from collections.abc import Callable
     from types import TracebackType
+    from typing import Self
 
     from .database import Database
     from .types import Type
 
-    if sys.version_info >= (3, 11):
-        from typing import Self
-    else:
-        from typing_extensions import Self
-
 
 def _capi_value_signature(value: Any) -> tuple:
     """
diff --git a/src_py/database.py b/src_py/database.py
index 684e436..101375a 100644
--- a/src_py/database.py
+++ b/src_py/database.py
@@ -9,8 +9,8 @@
 from .types import Type
 
 if TYPE_CHECKING:
-    import sys
     from types import TracebackType
+    from typing import Self
 
     from numpy.typing import NDArray
     from torch_geometric.data.feature_store import IndexType
@@ -19,11 +19,6 @@
     from .torch_geometric_feature_store import LbugFeatureStore
     from .torch_geometric_graph_store import LbugGraphStore
 
-    if sys.version_info >= (3, 11):
-        from typing import Self
-    else:
-        from typing_extensions import Self
-
 
 class Database:
     """Lbug database instance."""
diff --git a/src_py/query_result.py b/src_py/query_result.py
index ba8d31e..b0d00ab 100644
--- a/src_py/query_result.py
+++ b/src_py/query_result.py
@@ -8,10 +8,9 @@
 from .types import Type
 
 if TYPE_CHECKING:
-    import sys
     from collections.abc import Iterator
     from types import TracebackType
-    from typing import Any
+    from typing import Any, Self
 
     import networkx as nx
     import pandas as pd
@@ -19,11 +18,6 @@
     import pyarrow as pa
     import torch_geometric.data as geo
 
-    if sys.version_info >= (3, 11):
-        from typing import Self
-    else:
-        from typing_extensions import Self
-
 
 class QueryResult:
     """QueryResult stores the result of a query execution."""