diff --git a/.github/workflows/checks.yaml b/.github/workflows/checks.yaml
index 42da97e..4294631 100644
--- a/.github/workflows/checks.yaml
+++ b/.github/workflows/checks.yaml
@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.10', '3.11', '3.12']
     steps:
       - uses: actions/checkout@v3
 
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 43afb3b..4b6b29c 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -8,7 +8,7 @@ repos:
   - id: trailing-whitespace
   - id: end-of-file-fixer
 - repo: https://github.com/astral-sh/ruff-pre-commit
-  rev: v0.2.0
+  rev: v0.5.0  # ruff version
   hooks:
     - id: ruff-format
     - id: ruff
diff --git a/pyproject.toml b/pyproject.toml
index af62b09..7b914f5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,13 +16,11 @@ classifiers = [
     "Topic :: Scientific/Engineering :: Bio-Informatics",
     "License :: OSI Approved :: MIT License",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.8",
-    "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
 ]
-requires-python = ">=3.8"
+requires-python = ">=3.10"
 description = "Data acquisition tools for Wagnerds"
 license = {file = "LICENSE"}
 dependencies = [
@@ -32,7 +30,7 @@ dependencies = [
 
 [project.optional-dependencies]
 test = ["pytest>=6.0", "pytest-cov", "requests-mock"]
-dev = ["pre-commit", "ruff==0.2.0"]
+dev = ["pre-commit", "ruff==0.5.0"]
 docs = [
     "sphinx==6.1.3",
     "sphinx-autodoc-typehints==1.22.0",
@@ -86,16 +84,22 @@ select = [
     "DTZ",  # https://docs.astral.sh/ruff/rules/#flake8-datetimez-dtz
     "T10",  # https://docs.astral.sh/ruff/rules/#flake8-datetimez-dtz
     "EM",  # https://docs.astral.sh/ruff/rules/#flake8-errmsg-em
+    "LOG",  # https://docs.astral.sh/ruff/rules/#flake8-logging-log
     "G",  # https://docs.astral.sh/ruff/rules/#flake8-logging-format-g
+    "INP",  # https://docs.astral.sh/ruff/rules/#flake8-no-pep420-inp
     "PIE",  # https://docs.astral.sh/ruff/rules/#flake8-pie-pie
     "T20",  # https://docs.astral.sh/ruff/rules/#flake8-print-t20
     "PT",  # https://docs.astral.sh/ruff/rules/#flake8-pytest-style-pt
     "Q",  # https://docs.astral.sh/ruff/rules/#flake8-quotes-q
     "RSE",  # https://docs.astral.sh/ruff/rules/#flake8-raise-rse
     "RET",  # https://docs.astral.sh/ruff/rules/#flake8-return-ret
+    "SLF",  # https://docs.astral.sh/ruff/rules/#flake8-self-slf
     "SIM",  # https://docs.astral.sh/ruff/rules/#flake8-simplify-sim
+    "ARG",  # https://docs.astral.sh/ruff/rules/#flake8-unused-arguments-arg
     "PTH",  # https://docs.astral.sh/ruff/rules/#flake8-use-pathlib-pth
     "PGH",  # https://docs.astral.sh/ruff/rules/#pygrep-hooks-pgh
+    "PERF",  # https://docs.astral.sh/ruff/rules/#perflint-perf
+    "FURB",  # https://docs.astral.sh/ruff/rules/#refurb-furb
     "RUF",  # https://docs.astral.sh/ruff/rules/#ruff-specific-rules-ruf
 ]
 fixable = [
@@ -106,16 +110,20 @@ fixable = [
     "ANN",
     "B",
     "C4",
+    "LOG",
     "G",
     "PIE",
     "PT",
     "RSE",
     "SIM",
+    "PERF",
+    "FURB",
     "RUF"
 ]
 
-# ANN101 - missing-type-self
 # ANN003 - missing-type-kwargs
+# ANN101 - missing-type-self
+# ANN102 - missing-type-cls
 # D203 - one-blank-line-before-class
 # D205 - blank-line-after-summary
 # D206 - indent-with-spaces*
@@ -131,7 +139,7 @@ fixable = [
 # S321 - suspicious-ftp-lib-usage
 # *ignored for compatibility with formatter
 ignore = [
-    "ANN101", "ANN003",
+    "ANN003", "ANN101", "ANN102",
     "D203", "D205", "D206", "D213", "D300", "D400", "D415",
     "E111", "E114", "E117", "E501",
     "W191",
@@ -141,15 +149,20 @@ ignore = [
 [tool.ruff.lint.per-file-ignores]
 # ANN001 - missing-type-function-argument
 # ANN2 - missing-return-type
-# ANN201 - Missing type annotation
-# ANN102 - missing-type-cls
-# N805 - invalid-first-argument-name-for-method
-# PT018 - pytest-composite-assertion
 # S101 - assert
-"tests/*" = ["ANN001", "ANN102", "ANN2", "S101"]
+# B011 - assert-false
+# INP001 - implicit-namespace-package
+# PT018 - pytest-composite-assertion
+# ARG001 - unused-function-argument
+# ARG005 - unused-lambda-argument
+# T201 - print
+"tests/*" = ["ANN001", "ANN2", "S101", "B011", "INP001"]
 "tests/test_hemonc.py" = ["PT018"]
 "tests/test_gtop.py" = ["PT018"]
 "tests/test_do.py" = ["PT018"]
-"*__init__.py" = ["F401"]
-"src/wags_tails/base_source.py" = ["ANN102"]
+"tests/test_custom.py" = ["ARG001", "ARG005"]
 "src/wags_tails/utils/downloads.py" = ["T201"]
+
+
+[tool.ruff.format]
+docstring-code-format = true
diff --git a/src/wags_tails/__init__.py b/src/wags_tails/__init__.py
index 9b8dc28..971a229 100644
--- a/src/wags_tails/__init__.py
+++ b/src/wags_tails/__init__.py
@@ -1,4 +1,5 @@
 """Data acquisition tools for Wagnerds."""
+
 from .base_source import DataSource, RemoteDataError
 from .chembl import ChemblData
 from .chemidplus import ChemIDplusData
diff --git a/src/wags_tails/base_source.py b/src/wags_tails/base_source.py
index 3567c80..4063dea 100644
--- a/src/wags_tails/base_source.py
+++ b/src/wags_tails/base_source.py
@@ -3,11 +3,12 @@
 All source classes should inherit - directly or indirectly - from ``DataSource``. Each
 class defined here is an ``abstract base class`` and cannot be instantiated directly.
 """
+
 import abc
 import datetime
 import logging
+from collections.abc import Generator
 from pathlib import Path
-from typing import Generator, Optional, Tuple
 
 import requests
 
@@ -33,7 +34,7 @@ class DataSource(abc.ABC):
     _filetype: str
     _versioned: bool = True
 
-    def __init__(self, data_dir: Optional[Path] = None, silent: bool = True) -> None:
+    def __init__(self, data_dir: Path | None = None, silent: bool = True) -> None:
         """Set common class parameters.
 
         :param data_dir: direct location to store data files in, if specified. See
@@ -71,7 +72,7 @@ def _download_data(self, version: str, outfile: Path) -> None:
 
     def get_latest(
         self, from_local: bool = False, force_refresh: bool = False
-    ) -> Tuple[Path, str]:
+    ) -> tuple[Path, str]:
         """Get path to latest version of data.
 
         Provides logic for both versioned and unversioned data here, rather than in the
diff --git a/src/wags_tails/chembl.py b/src/wags_tails/chembl.py
index 45a3f85..dc085f6 100644
--- a/src/wags_tails/chembl.py
+++ b/src/wags_tails/chembl.py
@@ -1,4 +1,5 @@
 """Provide source fetching for ChEMBL."""
+
 import fnmatch
 import re
 import tarfile
diff --git a/src/wags_tails/chemidplus.py b/src/wags_tails/chemidplus.py
index 673124c..6eaaace 100644
--- a/src/wags_tails/chemidplus.py
+++ b/src/wags_tails/chemidplus.py
@@ -1,4 +1,5 @@
 """Provide source fetching for ChemIDplus."""
+
 import datetime
 import re
 from pathlib import Path
@@ -38,7 +39,7 @@ def _get_latest_version() -> str:
             .strftime(DATE_VERSION_PATTERN)
         )
 
-    def _download_data(self, version: str, outfile: Path) -> None:
+    def _download_data(self, version: str, outfile: Path) -> None:  # noqa: ARG002
         """Download data file to specified location. ChemIDplus data is no longer
         updated, so versioning is irrelevant.
 
diff --git a/src/wags_tails/custom.py b/src/wags_tails/custom.py
index d0ffc8a..9b1ebe9 100644
--- a/src/wags_tails/custom.py
+++ b/src/wags_tails/custom.py
@@ -9,8 +9,10 @@
 The :ref:`documentation <custom_data_source>` provides more explanation and an in-depth
 example.
 """
+
+from collections.abc import Callable
 from pathlib import Path
-from typing import Callable, Optional, Protocol
+from typing import Protocol
 
 from .base_source import DataSource
 
@@ -19,7 +21,11 @@ class _DownloadCallbackType(Protocol):
     """Define type for CustomData ``download_cb`` arg"""
 
     def __call__(self, version: str, outfile: Path) -> None:
-        ...
+        """Implicit description of ``download_cb`` arg. Shouldn't actually be used.
+
+        :param version: version to acquire
+        :param outfile: location and filename for final data file
+        """
 
 
 class CustomData(DataSource):
@@ -31,8 +37,8 @@ def __init__(
         filetype: str,
         latest_version_cb: Callable[[], str],
         download_cb: _DownloadCallbackType,
-        data_dir: Optional[Path] = None,
-        file_name: Optional[str] = None,
+        data_dir: Path | None = None,
+        file_name: str | None = None,
         versioned: bool = True,
         silent: bool = False,
     ) -> None:
diff --git a/src/wags_tails/do.py b/src/wags_tails/do.py
index 8eff946..725b72f 100644
--- a/src/wags_tails/do.py
+++ b/src/wags_tails/do.py
@@ -1,4 +1,5 @@
 """Provide source fetching for Human Disease Ontology."""
+
 import datetime
 import tarfile
 from pathlib import Path
diff --git a/src/wags_tails/drugbank.py b/src/wags_tails/drugbank.py
index e1dcded..13c6250 100644
--- a/src/wags_tails/drugbank.py
+++ b/src/wags_tails/drugbank.py
@@ -1,7 +1,7 @@
 """Provide source fetching for DrugBank."""
+
 import logging
 from pathlib import Path
-from typing import Tuple
 
 import requests
 
@@ -19,7 +19,7 @@ class DrugBankData(DataSource):
     _filetype = "csv"
 
     @staticmethod
-    def _get_latest_version() -> Tuple[str, str]:
+    def _get_latest_version() -> tuple[str, str]:
         """Retrieve latest version value
 
         :return: latest release value and base download URL
@@ -35,7 +35,7 @@ def _get_latest_version() -> Tuple[str, str]:
             msg = "Unable to parse latest DrugBank version number from releases API endpoint"
             raise RemoteDataError(msg) from e
 
-    def _get_latest_local_file(self, glob: str) -> Tuple[Path, str]:
+    def _get_latest_local_file(self, glob: str) -> tuple[Path, str]:
         """Get most recent locally-available file. DrugBank uses versioning that isn't
         easily sortable by default so we have to use some extra magic.
 
@@ -72,7 +72,7 @@ def _download_data(self, url: str, outfile: Path) -> None:
 
     def get_latest(
         self, from_local: bool = False, force_refresh: bool = False
-    ) -> Tuple[Path, str]:
+    ) -> tuple[Path, str]:
         """Get path to latest version of data, and its version value
 
         :param from_local: if True, use latest available local file
diff --git a/src/wags_tails/drugsatfda.py b/src/wags_tails/drugsatfda.py
index 34ea124..d8d8492 100644
--- a/src/wags_tails/drugsatfda.py
+++ b/src/wags_tails/drugsatfda.py
@@ -1,4 +1,5 @@
 """Provide source fetching for Drugs@FDA."""
+
 import datetime
 from pathlib import Path
 
@@ -38,7 +39,7 @@ def _get_latest_version() -> str:
             .strftime(DATE_VERSION_PATTERN)
         )
 
-    def _download_data(self, version: str, outfile: Path) -> None:
+    def _download_data(self, version: str, outfile: Path) -> None:  # noqa: ARG002
         """Download latest data file to specified location.
 
         :param version: version to acquire
diff --git a/src/wags_tails/ensembl.py b/src/wags_tails/ensembl.py
index ece3a25..699da1f 100644
--- a/src/wags_tails/ensembl.py
+++ b/src/wags_tails/ensembl.py
@@ -1,4 +1,5 @@
 """Provide data management for Ensembl genomic data."""
+
 from pathlib import Path
 
 import requests
diff --git a/src/wags_tails/ensembl_transcript_mappings.py b/src/wags_tails/ensembl_transcript_mappings.py
index 5ef3277..d61552a 100644
--- a/src/wags_tails/ensembl_transcript_mappings.py
+++ b/src/wags_tails/ensembl_transcript_mappings.py
@@ -14,7 +14,7 @@ class EnsemblTranscriptMappingData(UnversionedDataSource):
     _src_name = "ensembl_transcript_mappings"
     _filetype = "tsv"
 
-    def _download_data(self, version: str, outfile: Path) -> None:
+    def _download_data(self, version: str, outfile: Path) -> None:  # noqa: ARG002
         """Download data file to specified location.
 
         :param version: version to acquire
diff --git a/src/wags_tails/guide_to_pharmacology.py b/src/wags_tails/guide_to_pharmacology.py
index b71ad17..a4d5bd4 100644
--- a/src/wags_tails/guide_to_pharmacology.py
+++ b/src/wags_tails/guide_to_pharmacology.py
@@ -1,8 +1,9 @@
 """Provide source fetching for Guide To Pharmacology."""
+
 import logging
 import re
 from pathlib import Path
-from typing import NamedTuple, Tuple
+from typing import NamedTuple
 
 import requests
 
@@ -67,7 +68,7 @@ def _download_data(self, file_paths: GtoPLigandPaths) -> None:
 
     def get_latest(
         self, from_local: bool = False, force_refresh: bool = False
-    ) -> Tuple[GtoPLigandPaths, str]:
+    ) -> tuple[GtoPLigandPaths, str]:
         """Get path to latest version of data, and its version value
 
         :param from_local: if True, use latest available local file
diff --git a/src/wags_tails/hemonc.py b/src/wags_tails/hemonc.py
index 7af417c..68fa2c6 100644
--- a/src/wags_tails/hemonc.py
+++ b/src/wags_tails/hemonc.py
@@ -1,9 +1,10 @@
 """Provide source fetching for HemOnc."""
+
 import logging
 import os
 import zipfile
 from pathlib import Path
-from typing import NamedTuple, Tuple
+from typing import NamedTuple
 
 import requests
 
@@ -69,7 +70,7 @@ def _download_handler(self, dl_path: Path, file_paths: HemOncPaths) -> None:
                         zip_ref.extract(file, path.parent)
         dl_path.unlink()
 
-    def _download_data(self, version: str, outfile_paths: HemOncPaths) -> None:
+    def _download_data(self, version: str, outfile_paths: HemOncPaths) -> None:  # noqa: ARG002
         """Download data file to specified location.
 
         :param version: version to acquire
@@ -84,13 +85,13 @@ def _download_data(self, version: str, outfile_paths: HemOncPaths) -> None:
             self.data_dir,
             headers={"X-Dataverse-key": api_key},
             # provide save_path arg for API consistency, but don't use it
-            handler=lambda dl_path, save_path: self._download_handler(
+            handler=lambda dl_path, save_path: self._download_handler(  # noqa: ARG005
                 dl_path, outfile_paths
             ),
             tqdm_params=self._tqdm_params,
         )
 
-    def _get_local_files(self) -> Tuple[HemOncPaths, str]:
+    def _get_local_files(self) -> tuple[HemOncPaths, str]:
         """Acquire locally-available data files.
 
         :return: HemOnc file paths and their version
@@ -108,7 +109,7 @@ def _get_local_files(self) -> Tuple[HemOncPaths, str]:
 
     def get_latest(
         self, from_local: bool = False, force_refresh: bool = False
-    ) -> Tuple[HemOncPaths, str]:
+    ) -> tuple[HemOncPaths, str]:
         """Get path to latest version of data, and its version value
 
         :param from_local: if True, use latest available local file
diff --git a/src/wags_tails/hgnc.py b/src/wags_tails/hgnc.py
index f9c52e4..1118ee2 100644
--- a/src/wags_tails/hgnc.py
+++ b/src/wags_tails/hgnc.py
@@ -1,4 +1,5 @@
 """Provide data fetching for HGNC."""
+
 import ftplib
 from pathlib import Path
 
@@ -26,7 +27,7 @@ def _get_latest_version(self) -> str:
             timestamp = ftp.voidcmd(f"MDTM {self._directory_path}{self._host_filename}")
         return timestamp[4:12]
 
-    def _download_data(self, version: str, outfile: Path) -> None:
+    def _download_data(self, version: str, outfile: Path) -> None:  # noqa: ARG002
         """Download data file to specified location.
 
         :param version: version to acquire
diff --git a/src/wags_tails/mondo.py b/src/wags_tails/mondo.py
index d815ab0..a41dc84 100644
--- a/src/wags_tails/mondo.py
+++ b/src/wags_tails/mondo.py
@@ -1,8 +1,8 @@
 """Provide source fetching for Mondo Disease Ontology."""
+
 import datetime
 import logging
 from pathlib import Path
-from typing import Tuple
 
 import requests
 
@@ -22,7 +22,7 @@ class MondoData(GitHubDataSource):
     _repo = "monarch-initiative/mondo"
 
     @staticmethod
-    def _get_latest_version() -> Tuple[str, str]:
+    def _get_latest_version() -> tuple[str, str]:
         """Retrieve latest version value, and download URL, from GitHub release data.
 
         :param asset_name: name of file asset, if needed
@@ -71,7 +71,7 @@ def _download_data(self, version: str, outfile: Path) -> None:
 
     def get_latest(
         self, from_local: bool = False, force_refresh: bool = False
-    ) -> Tuple[Path, str]:
+    ) -> tuple[Path, str]:
         """Get path to latest version of data. Overwrite inherited method because
         final downloads depend on information gleaned from the version API call.
 
diff --git a/src/wags_tails/ncbi.py b/src/wags_tails/ncbi.py
index 9d740d5..fe490cb 100644
--- a/src/wags_tails/ncbi.py
+++ b/src/wags_tails/ncbi.py
@@ -1,9 +1,10 @@
 """Provide data fetching for NCBI gene data sources."""
+
 import ftplib
 import logging
 import re
 from pathlib import Path
-from typing import NamedTuple, Tuple
+from typing import NamedTuple
 
 from wags_tails.base_source import DataSource, RemoteDataError
 from wags_tails.utils.downloads import download_ftp, handle_gzip
@@ -142,7 +143,7 @@ def _download_data(self, file_paths: NcbiGenePaths) -> None:
 
     def get_latest(
         self, from_local: bool = False, force_refresh: bool = False
-    ) -> Tuple[NcbiGenePaths, str]:
+    ) -> tuple[NcbiGenePaths, str]:
         """Get path to latest version of data, and its version value
 
         :param from_local: if True, use latest available local file
diff --git a/src/wags_tails/ncbi_lrg_refseqgene.py b/src/wags_tails/ncbi_lrg_refseqgene.py
index 64ceeac..c426d9d 100644
--- a/src/wags_tails/ncbi_lrg_refseqgene.py
+++ b/src/wags_tails/ncbi_lrg_refseqgene.py
@@ -1,4 +1,5 @@
 """Fetches NCBI LRG_RefSeqGene data."""
+
 import re
 from pathlib import Path
 
@@ -36,7 +37,7 @@ def _get_latest_version(self) -> str:
             raise RemoteDataError(msg)
         return match[0].replace("-", "")
 
-    def _download_data(self, version: str, outfile: Path) -> None:
+    def _download_data(self, version: str, outfile: Path) -> None:  # noqa: ARG002
         """Download data file to specified location.
 
         :param version: version to acquire
diff --git a/src/wags_tails/ncbi_mane_summary.py b/src/wags_tails/ncbi_mane_summary.py
index 53bb56a..354f39c 100644
--- a/src/wags_tails/ncbi_mane_summary.py
+++ b/src/wags_tails/ncbi_mane_summary.py
@@ -1,4 +1,5 @@
 """Fetches NCBI MANE summary data."""
+
 from pathlib import Path
 
 import requests
diff --git a/src/wags_tails/ncit.py b/src/wags_tails/ncit.py
index a53313d..5c9431c 100644
--- a/src/wags_tails/ncit.py
+++ b/src/wags_tails/ncit.py
@@ -1,4 +1,5 @@
 """Provide source fetching for NCI Thesaurus."""
+
 import re
 from pathlib import Path
 
diff --git a/src/wags_tails/oncotree.py b/src/wags_tails/oncotree.py
index 6253230..74b5c88 100644
--- a/src/wags_tails/oncotree.py
+++ b/src/wags_tails/oncotree.py
@@ -1,4 +1,5 @@
 """Provide access to Oncotree data."""
+
 import datetime
 from pathlib import Path
 
@@ -39,7 +40,7 @@ def _get_latest_version(self) -> str:
             .strftime(DATE_VERSION_PATTERN)
         )
 
-    def _download_data(self, version: str, outfile: Path) -> None:
+    def _download_data(self, version: str, outfile: Path) -> None:  # noqa: ARG002
         """Download data file to specified location.
 
         :param version: version to acquire
diff --git a/src/wags_tails/rxnorm.py b/src/wags_tails/rxnorm.py
index dd1c60b..a9da22f 100644
--- a/src/wags_tails/rxnorm.py
+++ b/src/wags_tails/rxnorm.py
@@ -1,4 +1,5 @@
 """Provide source fetching for RxNorm."""
+
 import datetime
 import os
 import zipfile
diff --git a/src/wags_tails/utils/downloads.py b/src/wags_tails/utils/downloads.py
index 56d328b..d54023e 100644
--- a/src/wags_tails/utils/downloads.py
+++ b/src/wags_tails/utils/downloads.py
@@ -1,4 +1,5 @@
 """Provide helper functions for downloading data."""
+
 import ftplib
 import gzip
 import logging
@@ -6,8 +7,8 @@
 import re
 import tempfile
 import zipfile
+from collections.abc import Callable
 from pathlib import Path
-from typing import Callable, Dict, Optional
 
 import requests
 from tqdm import tqdm
@@ -51,8 +52,8 @@ def download_ftp(
     host_directory_path: str,
     host_filename: str,
     outfile_path: Path,
-    handler: Optional[Callable[[Path, Path], None]] = None,
-    tqdm_params: Optional[Dict] = None,
+    handler: Callable[[Path, Path], None] | None = None,
+    tqdm_params: dict | None = None,
 ) -> None:
     """Perform FTP download of remote data file.
 
@@ -79,9 +80,10 @@ def download_ftp(
         file_size = ftp.size(host_filename)
         if not tqdm_params.get("disable"):
             print(f"Downloading {host}/{host_directory_path}{host_filename}...")
-        with dl_path.open("wb") as fp, tqdm(
-            total=file_size, **tqdm_params
-        ) as progress_bar:
+        with (
+            dl_path.open("wb") as fp,
+            tqdm(total=file_size, **tqdm_params) as progress_bar,
+        ):
 
             def _cb(data: bytes) -> None:
                 progress_bar.update(len(data))
@@ -98,9 +100,9 @@ def _cb(data: bytes) -> None:
 def download_http(
     url: str,
     outfile_path: Path,
-    headers: Optional[Dict] = None,
-    handler: Optional[Callable[[Path, Path], None]] = None,
-    tqdm_params: Optional[Dict] = None,
+    headers: dict | None = None,
+    handler: Callable[[Path, Path], None] | None = None,
+    tqdm_params: dict | None = None,
 ) -> None:
     """Perform HTTP download of remote data file.
 
@@ -132,9 +134,10 @@ def download_http(
                 print(f"Downloading {print_url}...")
             else:
                 print(f"Downloading {os.path.basename(url)}...")  # noqa: PTH119
-        with dl_path.open("wb") as h, tqdm(
-            total=total_size, **tqdm_params
-        ) as progress_bar:
+        with (
+            dl_path.open("wb") as h,
+            tqdm(total=total_size, **tqdm_params) as progress_bar,
+        ):
             for chunk in r.iter_content(chunk_size=8192):
                 if chunk:
                     h.write(chunk)
diff --git a/src/wags_tails/utils/storage.py b/src/wags_tails/utils/storage.py
index 01cefa4..308e41f 100644
--- a/src/wags_tails/utils/storage.py
+++ b/src/wags_tails/utils/storage.py
@@ -1,4 +1,5 @@
 """Provide helpful functions for managing data storage."""
+
 import logging
 import os
 from pathlib import Path
diff --git a/src/wags_tails/utils/versioning.py b/src/wags_tails/utils/versioning.py
index bc3f301..facc586 100644
--- a/src/wags_tails/utils/versioning.py
+++ b/src/wags_tails/utils/versioning.py
@@ -1,4 +1,5 @@
 """Basic utilities pertaining to data versioning."""
+
 import re
 from pathlib import Path
 
diff --git a/tests/conftest.py b/tests/conftest.py
index 1455fae..5640969 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -1,4 +1,5 @@
 """Provide core testing utilities."""
+
 import shutil
 from pathlib import Path
 
diff --git a/tests/test_base.py b/tests/test_base.py
index 9048e23..1609945 100644
--- a/tests/test_base.py
+++ b/tests/test_base.py
@@ -1,4 +1,5 @@
 """Test base class functions."""
+
 import os
 import tempfile
 from pathlib import Path
diff --git a/tests/test_chembl.py b/tests/test_chembl.py
index a77b914..cccec19 100644
--- a/tests/test_chembl.py
+++ b/tests/test_chembl.py
@@ -1,4 +1,5 @@
 """Test ChEMBL data source."""
+
 from io import TextIOWrapper
 from pathlib import Path
 
diff --git a/tests/test_chemidplus.py b/tests/test_chemidplus.py
index 79d15ef..5a44aa6 100644
--- a/tests/test_chemidplus.py
+++ b/tests/test_chemidplus.py
@@ -1,4 +1,5 @@
 """Test ChemIDplus data source."""
+
 from pathlib import Path
 
 import pytest
diff --git a/tests/test_custom.py b/tests/test_custom.py
index 09499f4..1746fe3 100644
--- a/tests/test_custom.py
+++ b/tests/test_custom.py
@@ -1,4 +1,5 @@
 """Test custom data source."""
+
 from io import TextIOWrapper
 from pathlib import Path
 
diff --git a/tests/test_do.py b/tests/test_do.py
index c51e2f4..4d63638 100644
--- a/tests/test_do.py
+++ b/tests/test_do.py
@@ -1,8 +1,8 @@
 """Test Disease Ontology data source."""
+
 import json
 from io import TextIOWrapper
 from pathlib import Path
-from typing import Dict
 
 import pytest
 import requests_mock
@@ -48,8 +48,8 @@ def latest_release_file(fixture_dir):
 def test_get_latest(
     do: DoData,
     data_dir,
-    versions_response: Dict,
-    latest_release_response: Dict,
+    versions_response: dict,
+    latest_release_response: dict,
     latest_release_file: TextIOWrapper,
 ):
     """Test DoData.get_latest()"""
diff --git a/tests/test_drugbank.py b/tests/test_drugbank.py
index 9b66331..eb6fd0f 100644
--- a/tests/test_drugbank.py
+++ b/tests/test_drugbank.py
@@ -1,7 +1,7 @@
 """Test DrugBank data source."""
+
 import json
 from pathlib import Path
-from typing import Dict
 
 import pytest
 import requests_mock
@@ -40,7 +40,7 @@ def versions_response(fixture_dir):
 def test_get_latest(
     drugbank: DrugBankData,
     drugbank_data_dir: Path,
-    versions_response: Dict,
+    versions_response: dict,
     drugbank_file: str,
 ):
     """Test chemblData.get_latest()"""
diff --git a/tests/test_drugsatfda.py b/tests/test_drugsatfda.py
index d59e1d4..1d81e13 100644
--- a/tests/test_drugsatfda.py
+++ b/tests/test_drugsatfda.py
@@ -1,7 +1,7 @@
 """Test Drugs@FDA data source."""
+
 import json
 from pathlib import Path
-from typing import Dict
 
 import pytest
 import requests_mock
@@ -40,7 +40,7 @@ def drugsatfda_file(fixture_dir):
 def test_get_latest(
     drugsatfda: DrugsAtFdaData,
     drugsatfda_data_dir: Path,
-    latest_release_response: Dict,
+    latest_release_response: dict,
     drugsatfda_file: str,
 ):
     """Test DrugsAtFdaData.get_latest()"""
diff --git a/tests/test_ensembl.py b/tests/test_ensembl.py
index cfd675e..73cc842 100644
--- a/tests/test_ensembl.py
+++ b/tests/test_ensembl.py
@@ -1,4 +1,5 @@
 """Test Ensembl data source."""
+
 from pathlib import Path
 
 import pytest
diff --git a/tests/test_ensembl_transcript_mappings.py b/tests/test_ensembl_transcript_mappings.py
index 693346b..a7689bb 100644
--- a/tests/test_ensembl_transcript_mappings.py
+++ b/tests/test_ensembl_transcript_mappings.py
@@ -1,4 +1,5 @@
 """Test Ensembl Transcript Mappings data source."""
+
 from pathlib import Path
 
 import pytest
diff --git a/tests/test_gtop.py b/tests/test_gtop.py
index 6e06790..2cfe1cc 100644
--- a/tests/test_gtop.py
+++ b/tests/test_gtop.py
@@ -1,6 +1,6 @@
 """Test Guide to Pharmacology data source."""
+
 from pathlib import Path
-from typing import Dict
 
 import pytest
 import requests_mock
@@ -41,7 +41,7 @@ def gtop_ligand_file_paths(gtop_data_dir: Path):
 def test_get_latest(
     gtop_ligand: GToPLigandData,
     gtop_data_dir: Path,
-    latest_release_response: Dict,
+    latest_release_response: dict,
     gtop_ligand_file_paths: GtoPLigandPaths,
 ):
     """Test GToPLigandData.get_latest()"""
diff --git a/tests/test_hemonc.py b/tests/test_hemonc.py
index 4a90ab5..8c4498c 100644
--- a/tests/test_hemonc.py
+++ b/tests/test_hemonc.py
@@ -1,8 +1,8 @@
 """Test HemOnc data source."""
+
 import json
 import os
 from pathlib import Path
-from typing import Dict
 
 import pytest
 import requests_mock
@@ -51,7 +51,7 @@ def hemonc_file_paths(hemonc_data_dir: Path):
 def test_get_latest(
     hemonc: HemOncData,
     hemonc_data_dir,
-    latest_release_response: Dict,
+    latest_release_response: dict,
     hemonc_file: str,
     hemonc_file_paths: HemOncPaths,
 ):
diff --git a/tests/test_hgnc.py b/tests/test_hgnc.py
index 80cec02..62f1fff 100644
--- a/tests/test_hgnc.py
+++ b/tests/test_hgnc.py
@@ -1,4 +1,5 @@
 """Test HGNC data source."""
+
 from pathlib import Path
 
 import pytest
diff --git a/tests/test_mondo.py b/tests/test_mondo.py
index 3d6a37b..f7db62a 100644
--- a/tests/test_mondo.py
+++ b/tests/test_mondo.py
@@ -1,7 +1,7 @@
 """Test Mondo data source."""
+
 import json
 from pathlib import Path
-from typing import Dict
 
 import pytest
 import requests_mock
@@ -47,7 +47,7 @@ def versions_response(fixture_dir):
 def test_get_latest(
     mondo: MondoData,
     mondo_data_dir: Path,
-    latest_release_response: Dict,
+    latest_release_response: dict,
 ):
     """Test MondoData.get_latest()"""
     with pytest.raises(
@@ -99,7 +99,7 @@ def test_get_latest(
         assert m.call_count == 5
 
 
-def test_iterate_versions(mondo: MondoData, versions_response: Dict):
+def test_iterate_versions(mondo: MondoData, versions_response: dict):
     """Test MondoData.iterate_versions()"""
     with requests_mock.Mocker() as m:
         m.get(
diff --git a/tests/test_ncbi.py b/tests/test_ncbi.py
index 3133825..8126675 100644
--- a/tests/test_ncbi.py
+++ b/tests/test_ncbi.py
@@ -1,4 +1,5 @@
 """Test NCBI data source."""
+
 from pathlib import Path
 
 import pytest
diff --git a/tests/test_ncbi_lrg_refseqgene.py b/tests/test_ncbi_lrg_refseqgene.py
index dd17841..33e5949 100644
--- a/tests/test_ncbi_lrg_refseqgene.py
+++ b/tests/test_ncbi_lrg_refseqgene.py
@@ -1,4 +1,5 @@
 """Test NCBI LRG_RefSeqGene data source."""
+
 from pathlib import Path
 
 import pytest
diff --git a/tests/test_ncbi_mane_summary.py b/tests/test_ncbi_mane_summary.py
index 81f4114..db8011a 100644
--- a/tests/test_ncbi_mane_summary.py
+++ b/tests/test_ncbi_mane_summary.py
@@ -1,4 +1,5 @@
 """Test NCBI MANE summary data."""
+
 from pathlib import Path
 
 import pytest
diff --git a/tests/test_ncit.py b/tests/test_ncit.py
index 8f4b57e..6671f13 100644
--- a/tests/test_ncit.py
+++ b/tests/test_ncit.py
@@ -1,4 +1,5 @@
 """Test NCIt data source."""
+
 from io import TextIOWrapper
 from pathlib import Path
 
diff --git a/tests/test_oncotree.py b/tests/test_oncotree.py
index ec236f2..9f6c487 100644
--- a/tests/test_oncotree.py
+++ b/tests/test_oncotree.py
@@ -1,7 +1,7 @@
 """Test OncoTree data source."""
+
 import json
 from pathlib import Path
-from typing import Dict
 
 import pytest
 import requests_mock
@@ -40,8 +40,8 @@ def oncotree_tree(fixture_dir):
 def test_get_latest(
     oncotree: OncoTreeData,
     data_dir: Path,
-    oncotree_versions_response: Dict,
-    oncotree_tree: Dict,
+    oncotree_versions_response: dict,
+    oncotree_tree: dict,
 ):
     """Test chemblData.get_latest()"""
     with pytest.raises(
diff --git a/tests/test_rxnorm.py b/tests/test_rxnorm.py
index d8879c7..e5cd6af 100644
--- a/tests/test_rxnorm.py
+++ b/tests/test_rxnorm.py
@@ -1,9 +1,9 @@
 """Test RxNorm data source."""
+
 import json
 import os
 from io import TextIOWrapper
 from pathlib import Path
-from typing import Dict
 
 import pytest
 import requests_mock
@@ -42,7 +42,7 @@ def rxnorm_file(fixture_dir):
 def test_get_latest(
     rxnorm: RxNormData,
     rxnorm_data_dir: Path,
-    latest_release_response: Dict,
+    latest_release_response: dict,
     rxnorm_file: TextIOWrapper,
 ):
     """Test RxNormData.get_latest()"""