diff --git a/src/stactools/sentinel2/commands.py b/src/stactools/sentinel2/commands.py
index d90df72..af88ff4 100644
--- a/src/stactools/sentinel2/commands.py
+++ b/src/stactools/sentinel2/commands.py
@@ -66,7 +66,7 @@ def create_item_command(
             antimeridian_strategy=strategy,
         )
 
-        item_path = os.path.join(dst, "{}.json".format(item.id))
+        item_path = os.path.join(dst, f"{item.id}.json")
         item.set_self_href(item_path)
 
         item.save_object()
diff --git a/src/stactools/sentinel2/constants.py b/src/stactools/sentinel2/constants.py
index 5bdc156..ce86e28 100644
--- a/src/stactools/sentinel2/constants.py
+++ b/src/stactools/sentinel2/constants.py
@@ -1,4 +1,4 @@
-from typing import Dict, Final, List
+from typing import Final
 
 import pystac
 from pystac.extensions.eo import Band
@@ -16,7 +16,7 @@
     target="https://sentinel.esa.int/documents/247904/690755/Sentinel_Data_Legal_Notice",
 )
 
-SENTINEL_INSTRUMENTS: Final[List[str]] = ["msi"]
+SENTINEL_INSTRUMENTS: Final[list[str]] = ["msi"]
 SENTINEL_CONSTELLATION: Final[str] = "sentinel-2"
 
 SENTINEL_PROVIDER: Final[pystac.Provider] = pystac.Provider(
@@ -35,7 +35,7 @@
 DEFAULT_TOLERANCE: Final[float] = 0.01
 COORD_ROUNDING: Final[int] = 6
 
-SENTINEL_BANDS: Final[Dict[str, Band]] = {
+SENTINEL_BANDS: Final[dict[str, Band]] = {
     "coastal": Band.create(
         name="coastal",
         common_name="coastal",
@@ -133,7 +133,7 @@
 # available for each band as separate assets.
 # The first resolution is the sensor gsd; others
 # are downscaled versions.
-UNSUFFIXED_BAND_RESOLUTION: Final[Dict[str, int]] = {
+UNSUFFIXED_BAND_RESOLUTION: Final[dict[str, int]] = {
     "coastal": 60,
     "blue": 10,
     "green": 10,
@@ -151,7 +151,7 @@
     "snow": 20,
 }
 
-BANDS_TO_ASSET_NAME: Final[Dict[str, str]] = {
+BANDS_TO_ASSET_NAME: Final[dict[str, str]] = {
     "B01": "coastal",
     "B02": "blue",
     "B03": "green",
@@ -167,7 +167,7 @@
     "B12": "swir22",
 }
 
-L2A_IMAGE_PATHS: Final[List[str]] = [
+L2A_IMAGE_PATHS: Final[list[str]] = [
     "preview.jpg",
     "R10m/B04.jp2",
     "R10m/B03.jp2",
@@ -210,7 +210,7 @@
     "qi/SNW_20m.jp2",
 ]
 
-L1C_IMAGE_PATHS: Final[List[str]] = [
+L1C_IMAGE_PATHS: Final[list[str]] = [
     "preview.jpg",
     "B01.jp2",
     "B02.jp2",
diff --git a/src/stactools/sentinel2/granule_metadata.py b/src/stactools/sentinel2/granule_metadata.py
index 676467d..f11f556 100644
--- a/src/stactools/sentinel2/granule_metadata.py
+++ b/src/stactools/sentinel2/granule_metadata.py
@@ -2,7 +2,8 @@
 
 import re
 from dataclasses import dataclass
-from typing import Dict, Final, List, Optional, Pattern, Tuple
+from re import Pattern
+from typing import Final
 
 import pystac
 from pystac.utils import map_opt
@@ -19,7 +20,7 @@ class GranuleMetadataError(Exception):
 
 
 class GranuleMetadata:
-    def __init__(self, href, read_href_modifier: Optional[ReadHrefModifier] = None):
+    def __init__(self, href, read_href_modifier: ReadHrefModifier | None = None):
         self.href = href
 
         self._root = XmlElement.from_file(href, read_href_modifier)
@@ -51,7 +52,7 @@ def __init__(self, href, read_href_modifier: Optional[ReadHrefModifier] = None):
             "n1:Quality_Indicators_Info/Image_Content_QI"
         )
 
-        self.resolution_to_shape: Dict[int, Tuple[int, int]] = {}
+        self.resolution_to_shape: dict[int, tuple[int, int]] = {}
         for size_node in self._geocoding_node.findall("Size"):
             res = size_node.get_attr("resolution")
             if res is None:
@@ -69,7 +70,7 @@ def __init__(self, href, read_href_modifier: Optional[ReadHrefModifier] = None):
             self.resolution_to_shape[int(res)] = (nrows, ncols)
 
     @property
-    def epsg(self) -> Optional[int]:
+    def epsg(self) -> int | None:
         epsg_str = self._geocoding_node.find_text("HORIZONTAL_CS_CODE")
         if epsg_str is None:
             return None
@@ -77,7 +78,7 @@ def epsg(self) -> Optional[int]:
             return int(epsg_str.split(":")[1])
 
     @property
-    def proj_bbox(self) -> List[float]:
+    def proj_bbox(self) -> list[float]:
         """The bbox of the image in the CRS of the image data"""
         nrows, ncols = self.resolution_to_shape[10]
         geoposition = self._geocoding_node.find("Geoposition")
@@ -93,21 +94,21 @@ def proj_bbox(self) -> List[float]:
         return [ulx, uly - (10 * nrows), ulx + (10 * ncols), uly]
 
     @property
-    def cloudiness_percentage(self) -> Optional[float]:
+    def cloudiness_percentage(self) -> float | None:
         return map_opt(
             float,
             self._image_content_node.find_text("CLOUDY_PIXEL_PERCENTAGE"),
         )
 
     @property
-    def mean_solar_zenith(self) -> Optional[float]:
+    def mean_solar_zenith(self) -> float | None:
         return map_opt(
             float,
             self._tile_angles_node.find_text("Mean_Sun_Angle/ZENITH_ANGLE"),
         )
 
     @property
-    def mean_solar_azimuth(self) -> Optional[float]:
+    def mean_solar_azimuth(self) -> float | None:
         return map_opt(
             float,
             self._tile_angles_node.find_text("Mean_Sun_Angle/AZIMUTH_ANGLE"),
@@ -115,7 +116,7 @@ def mean_solar_azimuth(self) -> Optional[float]:
 
     @property
     def metadata_dict(self):
-        properties: Dict[str, Optional[float]] = {
+        properties: dict[str, float | None] = {
             f"{s2_prefix}:tile_id": self.tile_id,
             f"{s2_prefix}:product_type": map_opt(
                 float, self._image_content_node.find_text("PRODUCT_TYPE")
@@ -208,7 +209,7 @@ def scene_id(self) -> str:
         return "_".join(id_parts)
 
     @property
-    def platform(self) -> Optional[str]:
+    def platform(self) -> str | None:
         if self.tile_id.startswith("S2A"):
             return "sentinel-2a"
         elif self.tile_id.startswith("S2B"):
@@ -217,7 +218,7 @@ def platform(self) -> Optional[str]:
             return None
 
     @property
-    def processing_baseline(self) -> Optional[str]:
+    def processing_baseline(self) -> str | None:
         """Returns the string to be used for the baseline_processing property
         Parsed based on the naming convention found here:
         https://sentinel.esa.int/web/sentinel/user-guides/sentinel-2-msi/naming-convention
@@ -228,7 +229,7 @@ def processing_baseline(self) -> Optional[str]:
         return None
 
     @property
-    def pvi_filename(self) -> Optional[str]:
+    def pvi_filename(self) -> str | None:
         return self._root.find_text("n1:Quality_Indicators_Info/PVI_FILENAME")
 
     def create_asset(self):
@@ -244,7 +245,7 @@ class ViewingAngle:
     zenith: float
 
     @classmethod
-    def from_nodes(cls, nodes: List[XmlElement]) -> Dict[str, ViewingAngle]:
+    def from_nodes(cls, nodes: list[XmlElement]) -> dict[str, ViewingAngle]:
         angles = dict()
         for node in nodes:
             band_id_str = node.get_attr("bandId")
diff --git a/src/stactools/sentinel2/mgrs.py b/src/stactools/sentinel2/mgrs.py
index caed59d..802cc91 100644
--- a/src/stactools/sentinel2/mgrs.py
+++ b/src/stactools/sentinel2/mgrs.py
@@ -1,7 +1,8 @@
 """Implements the :stac-ext:`MGRS Extension <mgrs>`."""
 
 import re
-from typing import Any, Dict, FrozenSet, Optional, Pattern, Set, Union, cast
+from re import Pattern
+from typing import Any, Optional, Union, cast
 
 import pystac
 from pystac.extensions.base import ExtensionManagementMixin, PropertiesExtension
@@ -15,7 +16,7 @@
 GRID_SQUARE_PROP: str = PREFIX + "grid_square"  # required
 UTM_ZONE_PROP: str = PREFIX + "utm_zone"
 
-LATITUDE_BANDS: FrozenSet[str] = frozenset(
+LATITUDE_BANDS: frozenset[str] = frozenset(
     {
         "C",
         "D",
@@ -40,7 +41,7 @@
     }
 )
 
-UTM_ZONES: FrozenSet[int] = frozenset(
+UTM_ZONES: frozenset[int] = frozenset(
     {
         1,
         2,
@@ -158,7 +159,7 @@ class MgrsExtension(
     item: pystac.Item
     """The :class:`~pystac.Item` being extended."""
 
-    properties: Dict[str, Any]
+    properties: dict[str, Any]
     """The :class:`~pystac.Item` properties, including extension properties."""
 
     def __init__(self, item: pystac.Item):
@@ -166,7 +167,7 @@ def __init__(self, item: pystac.Item):
         self.properties = item.properties
 
     def __repr__(self) -> str:
-        return "<ItemMgrsExtension Item id={}>".format(self.item.id)
+        return f"<ItemMgrsExtension Item id={self.item.id}>"
 
     def apply(
         self,
@@ -242,7 +243,7 @@ def ext(cls, obj: pystac.Item, add_if_missing: bool = False) -> "MgrsExtension":
 
 class MgrsExtensionHooks(ExtensionHooks):
     schema_uri: str = SCHEMA_URI
-    prev_extension_ids: Set[str] = set()
+    prev_extension_ids: set[str] = set()
     stac_object_types = {pystac.STACObjectType.ITEM}
 
 
diff --git a/src/stactools/sentinel2/product_metadata.py b/src/stactools/sentinel2/product_metadata.py
index 2357f1f..c88d7f8 100644
--- a/src/stactools/sentinel2/product_metadata.py
+++ b/src/stactools/sentinel2/product_metadata.py
@@ -1,5 +1,5 @@
 from datetime import datetime
-from typing import Any, Dict, List, Optional
+from typing import Any, Optional
 
 import pystac
 from pystac.utils import map_opt, str_to_datetime
@@ -162,7 +162,7 @@ def image_media_type(self) -> str:
             return pystac.MediaType.JPEG2000
 
     @property
-    def image_paths(self) -> List[str]:
+    def image_paths(self) -> list[str]:
         extension = ".tif" if self.image_media_type == pystac.MediaType.COG else ".jp2"
 
         return [f"{x.text}{extension}" for x in self.granule_node.findall("IMAGE_FILE")]
@@ -180,7 +180,7 @@ def platform(self) -> Optional[str]:
         return self.datatake_node.find_text("SPACECRAFT_NAME")
 
     @property
-    def metadata_dict(self) -> Dict[str, Any]:
+    def metadata_dict(self) -> dict[str, Any]:
         result = {
             f"{s2_prefix}:product_uri": self.product_id,
             f"{s2_prefix}:generation_time": self.product_info_node.find_text(
@@ -208,7 +208,7 @@ def metadata_dict(self) -> Dict[str, Any]:
         return {k: v for k, v in result.items() if v is not None}
 
     @property
-    def boa_add_offsets(self) -> Dict[str, int]:
+    def boa_add_offsets(self) -> dict[str, int]:
         if self.boa_add_offset_values_list_node is not None:
             xs = {
                 x.get_attr("band_id"): int(x.text)
diff --git a/src/stactools/sentinel2/safe_manifest.py b/src/stactools/sentinel2/safe_manifest.py
index bf0c91c..1eff96c 100644
--- a/src/stactools/sentinel2/safe_manifest.py
+++ b/src/stactools/sentinel2/safe_manifest.py
@@ -1,5 +1,5 @@
 import os
-from typing import List, Optional, Tuple
+from typing import Optional
 
 import pystac
 from stactools.core.io import ReadHrefModifier
@@ -25,7 +25,7 @@ def __init__(
                 f"Manifest at {self.href} does not have a dataObjectSection"
             )
 
-    def _find_href(self, xpaths: List[str]) -> Optional[str]:
+    def _find_href(self, xpaths: list[str]) -> Optional[str]:
         file_path = None
         for xpath in xpaths:
             file_path = self._data_object_section.find_attr("href", xpath)
@@ -73,7 +73,7 @@ def granule_metadata_href(self) -> Optional[str]:
             ]
         )
 
-    def create_asset(self) -> Tuple[str, pystac.Asset]:
+    def create_asset(self) -> tuple[str, pystac.Asset]:
         asset = pystac.Asset(
             href=self.href, media_type=pystac.MediaType.XML, roles=["metadata"]
         )
diff --git a/src/stactools/sentinel2/stac.py b/src/stactools/sentinel2/stac.py
index 8234c5f..74c8a23 100644
--- a/src/stactools/sentinel2/stac.py
+++ b/src/stactools/sentinel2/stac.py
@@ -5,7 +5,8 @@
 from dataclasses import dataclass
 from datetime import datetime
 from itertools import chain
-from typing import Any, Dict, Final, List, Optional, Pattern, Tuple
+from re import Pattern
+from typing import Any, Final, Optional
 
 import antimeridian
 import pystac
@@ -65,7 +66,7 @@
 BAND_ID_PATTERN: Final[Pattern[str]] = re.compile(r"[_/](B\d[A\d])")
 RESOLUTION_PATTERN: Final[Pattern[str]] = re.compile(r"(\w{2}m)")
 
-RGB_BANDS: Final[List[Band]] = [
+RGB_BANDS: Final[list[Band]] = [
     SENTINEL_BANDS["red"],
     SENTINEL_BANDS["green"],
     SENTINEL_BANDS["blue"],
@@ -78,30 +79,30 @@
 class Metadata:
     scene_id: str
     cloudiness_percentage: Optional[float]
-    extra_assets: Dict[str, pystac.Asset]
-    geometry: Dict[str, Any]
-    bbox: List[float]
+    extra_assets: dict[str, pystac.Asset]
+    geometry: dict[str, Any]
+    bbox: list[float]
     datetime: datetime
     platform: str
-    metadata_dict: Dict[str, Any]
+    metadata_dict: dict[str, Any]
     image_media_type: str
-    image_paths: List[str]
+    image_paths: list[str]
     epsg: int
-    proj_bbox: List[float]
-    resolution_to_shape: Dict[int, Tuple[int, int]]
+    proj_bbox: list[float]
+    resolution_to_shape: dict[int, tuple[int, int]]
     processing_baseline: str
-    viewing_angles: Dict[str, ViewingAngle]
+    viewing_angles: dict[str, ViewingAngle]
     orbit_state: Optional[str] = None
     relative_orbit: Optional[int] = None
     sun_azimuth: Optional[float] = None
     sun_zenith: Optional[float] = None
-    boa_add_offsets: Optional[Dict[str, int]] = None
+    boa_add_offsets: Optional[dict[str, int]] = None
 
 
 def create_item(
     granule_href: str,
     tolerance: float = DEFAULT_TOLERANCE,
-    additional_providers: Optional[List[pystac.Provider]] = None,
+    additional_providers: Optional[list[pystac.Provider]] = None,
     read_href_modifier: Optional[ReadHrefModifier] = None,
     asset_href_prefix: Optional[str] = None,
     antimeridian_strategy: Strategy = Strategy.SPLIT,
@@ -247,13 +248,13 @@ def create_item(
 def image_asset_from_href(
     item: pystac.Item,
     asset_href: str,
-    resolution_to_shape: Dict[int, Tuple[int, int]],
-    proj_bbox: List[float],
+    resolution_to_shape: dict[int, tuple[int, int]],
+    proj_bbox: list[float],
     media_type: Optional[str],
     processing_baseline: str,
-    viewing_angles: Dict[str, ViewingAngle],
-    boa_add_offsets: Optional[Dict[str, int]] = None,
-) -> Tuple[str, pystac.Asset]:
+    viewing_angles: dict[str, ViewingAngle],
+    boa_add_offsets: Optional[dict[str, int]] = None,
+) -> tuple[str, pystac.Asset]:
     logger.debug(f"Creating asset for image {asset_href}")
 
     _, ext = os.path.splitext(asset_href)
@@ -666,11 +667,11 @@ def offset_for_pb(processing_baseline: str) -> float:
 
 
 def raster_bands(
-    boa_add_offsets: Optional[Dict[str, int]],
+    boa_add_offsets: Optional[dict[str, int]],
     processing_baseline: str,
     band_id: str,
     resolution: float,
-) -> List[RasterBand]:
+) -> list[RasterBand]:
     # prior to processing baseline 04.00, scale and offset were
     # defined out of band, so handle that case
     offset = (
diff --git a/src/stactools/sentinel2/tileinfo_metadata.py b/src/stactools/sentinel2/tileinfo_metadata.py
index cc9df1e..94c586c 100644
--- a/src/stactools/sentinel2/tileinfo_metadata.py
+++ b/src/stactools/sentinel2/tileinfo_metadata.py
@@ -1,6 +1,6 @@
 import json
 from datetime import datetime
-from typing import Any, Dict, Optional, Tuple
+from typing import Any, Optional
 
 import pystac
 from pystac.utils import str_to_datetime
@@ -29,11 +29,11 @@ def product_path(self) -> str:
         return self._product_path
 
     @property
-    def geometry(self) -> Dict[str, Any]:
+    def geometry(self) -> dict[str, Any]:
         return self._geometry
 
     @property
-    def bbox(self) -> Tuple[float, float, float, float]:
+    def bbox(self) -> tuple[float, float, float, float]:
         return self._bbox
 
     @property
diff --git a/src/stactools/sentinel2/utils.py b/src/stactools/sentinel2/utils.py
index e254ece..48a60c9 100644
--- a/src/stactools/sentinel2/utils.py
+++ b/src/stactools/sentinel2/utils.py
@@ -1,5 +1,6 @@
 import re
-from typing import Final, List, Optional, Pattern
+from re import Pattern
+from typing import Final, Optional
 
 import shapely
 from pystac import Item
@@ -18,7 +19,7 @@ def extract_gsd(image_path: str) -> Optional[int]:
         return None
 
 
-def fix_z_values(coord_values: List[str]) -> List[float]:
+def fix_z_values(coord_values: list[str]) -> list[float]:
     """Some geometries have a '0' value in the z position
     of the coordinates. This method detects and removes z
     position coordinates. This assumes that in cases where