diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 86d85580..55da8511 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -21,7 +21,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
         with:
-          python-version: "3.11"
+          python-version: "3.x"
       - uses: pre-commit/action@v3.0.1
 
   conda:
@@ -36,7 +36,6 @@ jobs:
       matrix:
         os: [ubuntu-latest]
         python-version:
-          - "3.8"
           - "3.9"
           - "3.10"
           - "3.11"
@@ -50,7 +49,6 @@ jobs:
         with:
           cache-downloads: true
           cache-environment: true
-          activate-environment: raven
           environment-file: environment.yml
           create-args: >-
             python=${{ matrix.python-version }}
@@ -60,14 +58,14 @@ jobs:
             echo "micromamba: $(micromamba --version)"
       - name: Install RavenWPS
         run: |
-          python3 -m pip install --no-user --editable ".[dev]"
+          python -m pip install --no-user --editable ".[dev]"
       - name: Check versions
         run: |
           conda list
-          pip check
+          python -m pip check
       - name: Test RavenWPS
         run: |
-          python3 -m pytest -m "not very_slow" tests
+          python -m pytest -m "not very_slow" tests
 
   finish:
     name: Finish
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 8c2ae549..fa03b47d 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -6,7 +6,7 @@ repos:
     rev: v3.15.2
     hooks:
       - id: pyupgrade
-        args: [ '--py38-plus' ]
+        args: [ '--py39-plus' ]
   - repo: https://github.com/pre-commit/pre-commit-hooks
     rev: v4.6.0
     hooks:
@@ -47,7 +47,7 @@ repos:
     rev: 1.8.5
     hooks:
       - id: nbqa-pyupgrade
-        args: [ '--py38-plus' ]
+        args: [ '--py39-plus' ]
         additional_dependencies: [ 'pyupgrade==v3.15.2' ]
       - id: nbqa-black
         additional_dependencies: [ 'black==24.4.2' ]
diff --git a/Makefile b/Makefile
index 2f0098c8..8de60a89 100644
--- a/Makefile
+++ b/Makefile
@@ -233,7 +233,10 @@ notebook:
 .PHONY: lint
 lint:
 	@echo "Running flake8 code style checks ..."
-	@bash -c 'flake8 raven tests'
+	black --check raven tests
+	isort --check raven tests
+	flake8 raven tests
+	yamllint --config-file=.yamllint.yaml raven
 
 # Only works for notebooks that passed ``make test-notebooks`` above.  For
 # those that failed, manually starting a local Jupyter server and refresh them
diff --git a/client_environment.yml b/client_environment.yml
deleted file mode 100644
index 8d6785c8..00000000
--- a/client_environment.yml
+++ /dev/null
@@ -1,32 +0,0 @@
-# conda env create -f environment.yml
-name: birdy
-channels:
-  - birdhouse
-  - conda-forge
-  - defaults
-dependencies:
-  - matplotlib
-  - xarray
-  - numpy
-  - netcdf4
-  - pydap
-  - proj<8.0.0
-  - cartopy
-  - rioxarray
-  - xclim
-  # to edit .ipynb
-  - jupyter
-  # to be launched by image jupyterhub/jupyterhub
-  - notebook
-  # for pip packages
-  - pip
-  - nc-time-axis
-  - ipyleaflet
-  - hvplot
-  - holoviews
-  - pip:
-    # visual debugger for Jupyter Notebook, not working with JupyterLab at this moment
-    - owslib
-    - pixiedust
-    - birdhouse-birdy
-    - ravenpy
diff --git a/environment-dev.yml b/environment-dev.yml
index b7cf7bcb..9577e5dc 100644
--- a/environment-dev.yml
+++ b/environment-dev.yml
@@ -5,11 +5,12 @@ channels:
 dependencies:
   - python >=3.8,<3.12
   - birdy
-  - black
+  - black >=24.4.2
   - bump2version
   - flake8
   - ipykernel
   - ipywidgets
+  - isort >=5.13.2
   - nbconvert
   - nbval
   - pip
diff --git a/environment.yml b/environment.yml
index 916415d2..103e7bf8 100644
--- a/environment.yml
+++ b/environment.yml
@@ -7,7 +7,7 @@ dependencies:
   - pywps ==4.5.1
   - affine
   - anyascii
-  - cartopy
+  - cartopy >=0.23.0
   - click
   - fiona >=1.9
   - geopandas >=0.12.0
diff --git a/pyproject.toml b/pyproject.toml
index 559314be..b0c9316f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -13,7 +13,7 @@ maintainers = [
   {name = "Tuan Long Vu", email = "vu.long@ouranos.ca"}
 ]
 readme = {file = "README.rst", content-type = "text/x-rst"}
-requires-python = ">=3.8.0"
+requires-python = ">=3.9.0"
 keywords = ["wps", "pywps", "birdhouse", "raven", "hydrology", "gis", "analysis"]
 license = {file = "LICENSE.txt"}
 classifiers = [
@@ -27,7 +27,6 @@ classifiers = [
   "Programming Language :: Python",
   "Natural Language :: English",
   "Programming Language :: Python :: 3",
-  "Programming Language :: Python :: 3.8",
   "Programming Language :: Python :: 3.9",
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
@@ -45,8 +44,7 @@ dependencies = [
   "netCDF4",
   "numpy",
   "owslib",
-  "pandas <2.0; python_version == '3.8'",
-  "pandas; python_version >= '3.9'",
+  "pandas >=2.0",
   "psutil",
   "pywps ==4.5.1",
   "requests",
@@ -54,6 +52,7 @@ dependencies = [
   "xclim >=0.31.0",
   # GIS libraries
   "affine",
+  "cartopy >=0.23.0",
   "fiona >=1.9.0",
   "geojson",
   "geopandas >=0.12.0",
@@ -74,11 +73,12 @@ dependencies = [
 dev = [
   # Dev tools and testing
   "birdhouse-birdy",
-  "black >=24.1.1",
+  "black >=24.4.2",
   "black-nb",
   "bumpversion",
   "flake8 >=7.0.0",
   "ipykernel",
+  "isort >=5.13.2",
   "nbconvert",
   "nbval",
   "nc-time-axis",
@@ -119,7 +119,6 @@ raven-wps = "raven.cli:cli"
 
 [tool.black]
 target-version = [
-  "py38",
   "py39",
   "py310",
   "py311"
@@ -169,7 +168,7 @@ exclude = [
 
 [tool.isort]
 profile = "black"
-py_version = 38
+py_version = 39
 append_only = true
 
 [tool.pytest.ini_options]
diff --git a/raven/utilities/analysis.py b/raven/utilities/analysis.py
index 06a5e813..343bb2d7 100644
--- a/raven/utilities/analysis.py
+++ b/raven/utilities/analysis.py
@@ -61,7 +61,7 @@ def geom_prop(geom: Union[Polygon, MultiPolygon, GeometryCollection]) -> dict:
 
 def dem_prop(
     dem: Union[str, Path],
-    geom: Union[Polygon, MultiPolygon, List[Union[Polygon, MultiPolygon]]] = None,
+    geom: Union[Polygon, MultiPolygon, list[Union[Polygon, MultiPolygon]]] = None,
     directory: Union[str, Path] = None,
 ) -> dict:
     """Return raster properties for each geometry.
diff --git a/raven/utilities/checks.py b/raven/utilities/checks.py
index b2dbd3d8..c3ed03a3 100644
--- a/raven/utilities/checks.py
+++ b/raven/utilities/checks.py
@@ -3,8 +3,9 @@
 import collections
 import logging
 import warnings
+from collections.abc import Sequence
 from pathlib import Path
-from typing import Any, List, Sequence, Tuple, Union
+from typing import Any, List, Tuple, Union
 
 from . import gis_import_error_message
 
@@ -125,8 +126,8 @@ def multipolygon_check(geom: GeometryCollection) -> None:
 
 
 def feature_contains(
-    point: Union[Tuple[Union[int, float, str], Union[str, float, int]], Point],
-    shp: Union[str, Path, List[Union[str, Path]]],
+    point: Union[tuple[Union[int, float, str], Union[str, float, int]], Point],
+    shp: Union[str, Path, list[Union[str, Path]]],
 ) -> Union[dict, bool]:
     """Return the first feature containing a location.
 
diff --git a/raven/utilities/geo.py b/raven/utilities/geo.py
index e8088fce..a7b826c8 100644
--- a/raven/utilities/geo.py
+++ b/raven/utilities/geo.py
@@ -87,7 +87,7 @@ def geom_transform(
 def generic_raster_clip(
     raster: Union[str, Path],
     output: Union[str, Path],
-    geometry: Union[Polygon, MultiPolygon, List[Union[Polygon, MultiPolygon]]],
+    geometry: Union[Polygon, MultiPolygon, list[Union[Polygon, MultiPolygon]]],
     touches: bool = False,
     fill_with_nodata: bool = True,
     padded: bool = True,
diff --git a/raven/utilities/geoserver.py b/raven/utilities/geoserver.py
index 986a2caf..408f37a7 100644
--- a/raven/utilities/geoserver.py
+++ b/raven/utilities/geoserver.py
@@ -18,8 +18,9 @@
 import os
 import urllib.request
 import warnings
+from collections.abc import Iterable, Sequence
 from pathlib import Path
-from typing import Iterable, Optional, Sequence, Tuple, Union
+from typing import Optional, Tuple, Union
 from urllib.parse import urljoin
 
 from requests import Request
@@ -62,7 +63,7 @@
 
 def _get_location_wfs(
     bbox: Optional[
-        Tuple[
+        tuple[
             Union[str, float, int],
             Union[str, float, int],
             Union[str, float, int],
@@ -70,7 +71,7 @@ def _get_location_wfs(
         ]
     ] = None,
     point: Optional[
-        Tuple[
+        tuple[
             Union[str, float, int],
             Union[str, float, int],
         ]
@@ -409,11 +410,11 @@ def aggfunc(x):
 
 def select_hybas_domain(
     bbox: Optional[
-        Tuple[
+        tuple[
             Union[int, float], Union[int, float], Union[int, float], Union[int, float]
         ]
     ] = None,
-    point: Optional[Tuple[Union[int, float], Union[int, float]]] = None,
+    point: Optional[tuple[Union[int, float], Union[int, float]]] = None,
 ) -> str:
     """Provided a given coordinate or boundary box, return the domain name of the geographic region the coordinate is located within.
 
@@ -483,7 +484,7 @@ def filter_hydrobasins_attributes_wfs(
 
 
 def get_hydrobasins_location_wfs(
-    coordinates: Tuple[
+    coordinates: tuple[
         Union[str, float, int],
         Union[str, float, int],
     ],
@@ -649,7 +650,7 @@ def filter_hydro_routing_attributes_wfs(
 
 
 def get_hydro_routing_location_wfs(
-    coordinates: Tuple[
+    coordinates: tuple[
         Union[int, float, str],
         Union[str, float, int],
     ],
diff --git a/raven/utilities/io.py b/raven/utilities/io.py
index 77a146a1..a1a23834 100644
--- a/raven/utilities/io.py
+++ b/raven/utilities/io.py
@@ -6,9 +6,10 @@
 import tempfile
 import warnings
 import zipfile
+from collections.abc import Iterable, Sequence
 from pathlib import Path
 from re import search
-from typing import Iterable, List, Optional, Sequence, Tuple, Union
+from typing import List, Optional, Tuple, Union
 
 from . import gis_import_error_message
 
@@ -79,9 +80,9 @@ def address_append(address: Union[str, Path]) -> str:
 
 
 def generic_extract_archive(
-    resources: Union[str, Path, List[Union[bytes, str, Path]]],
+    resources: Union[str, Path, list[Union[bytes, str, Path]]],
     output_dir: Optional[Union[str, Path]] = None,
-) -> List[str]:
+) -> list[str]:
     """Extract archives (tar/zip) to a working directory.
 
     Parameters
@@ -143,10 +144,10 @@ def generic_extract_archive(
 
 
 def archive_sniffer(
-    archives: Union[str, Path, List[Union[str, Path]]],
+    archives: Union[str, Path, list[Union[str, Path]]],
     working_dir: Optional[Union[str, Path]] = None,
     extensions: Optional[Sequence[str]] = None,
-) -> List[Union[str, Path]]:
+) -> list[Union[str, Path]]:
     """Return a list of locally unarchived files that match the desired extensions.
 
     Parameters
@@ -177,7 +178,7 @@ def archive_sniffer(
 
 def crs_sniffer(
     *args: Union[str, Path, Sequence[Union[str, Path]]]
-) -> Union[List[Union[str, int]], str, int]:
+) -> Union[list[Union[str, int]], str, int]:
     """Return the list of CRS found in files.
 
     Parameters
@@ -266,7 +267,7 @@ def raster_datatype_sniffer(file: Union[str, Path]) -> str:
 
 def get_bbox(
     vector: Union[str, Path], all_features: bool = True
-) -> Tuple[float, float, float, float]:
+) -> tuple[float, float, float, float]:
     """Return bounding box of all features or the first feature in file.
 
     Parameters
diff --git a/raven/utilities/testdata.py b/raven/utilities/testdata.py
index 4e03a472..d3a04c92 100644
--- a/raven/utilities/testdata.py
+++ b/raven/utilities/testdata.py
@@ -5,9 +5,10 @@
 import os
 import re
 import warnings
+from collections.abc import Sequence
 from pathlib import Path
 from shutil import copy
-from typing import List, Optional, Sequence, Union
+from typing import List, Optional, Union
 from urllib.error import HTTPError, URLError
 from urllib.parse import urljoin
 from urllib.request import urlretrieve
@@ -40,7 +41,7 @@ def get_local_testdata(
     temp_folder: Union[str, os.PathLike],
     branch: str = "master",
     _local_cache: Union[str, os.PathLike] = _default_cache_dir,
-) -> Union[Path, List[Path]]:
+) -> Union[Path, list[Path]]:
     """Copy specific testdata from a default cache to a temporary folder.
 
     Return files matching `pattern` in the default cache dir and move to a local temp folder.
@@ -175,7 +176,7 @@ def get_file(
     github_url: str = "https://github.com/Ouranosinc/raven-testdata",
     branch: str = "master",
     cache_dir: Path = _default_cache_dir,
-) -> Union[Path, List[Path]]:
+) -> Union[Path, list[Path]]:
     """
     Return a file from an online GitHub-like repository.
     If a local copy is found then always use that to avoid network traffic.
@@ -222,7 +223,7 @@ def query_folder(
     pattern: Optional[str] = None,
     github_url: str = "https://github.com/Ouranosinc/raven-testdata",
     branch: str = "master",
-) -> List[str]:
+) -> list[str]:
     """
     Lists the files available for retrieval from a remote git repository with get_file.
     If provided a folder name, will perform a globbing-like filtering operation for parent folders.
diff --git a/raven/utils.py b/raven/utils.py
index b7c4e158..db0d2179 100644
--- a/raven/utils.py
+++ b/raven/utils.py
@@ -101,7 +101,7 @@ def gather_dem_tile(
     return Path(raster_file)
 
 
-def parse_lonlat(lonlat: Union[str, Tuple[str, str]]) -> Tuple[float, float]:
+def parse_lonlat(lonlat: Union[str, tuple[str, str]]) -> tuple[float, float]:
     """Return longitude and latitude from a string.
 
     Parameters
@@ -133,7 +133,7 @@ def zonalstats_raster_file(
     data_type: str = None,
     crs: str = None,
     zip_archive: bool = False,
-) -> Union[str, List[Path]]:
+) -> Union[str, list[Path]]:
     """
     Extract the zonalstats grid(s) to a zipped GeoTIFF file and ensure that it is projected with specified CRS.