python
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
@@ -11,7 +11,7 @@ repos:
         args: [--fix=lf]
       - id: check-case-conflict
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.15.9 # must match requirements-tests.txt
+    rev: v0.15.20 # must match requirements-tests.txt
     hooks:
       - id: ruff
         name: Run ruff on stubs, tests and scripts
@@ -27,7 +27,7 @@ repos:
           - "--unsafe-fixes"
         files: '.*test_cases/.+\.py$'
   - repo: https://github.com/psf/black-pre-commit-mirror
-    rev: 26.5.0
+    rev: 26.5.1
     hooks:
       - id: black
   - repo: https://github.com/pycqa/flake8

diff --git a/lib/ts_utils/metadata.py b/lib/ts_utils/metadata.py
@@ -374,7 +374,7 @@ def update_metadata(distribution: str, **new_values: object) -> dict[str, object
         new_key = key.replace("_", "-")
         data[new_key] = data.pop(key)
     with path.open("w", encoding="UTF-8") as f:
-        tomlkit.dump(data, f)  # pyright: ignore[reportUnknownMemberType] # tomlkit.dump has partially unknown Mapping type
+        tomlkit.dump(data, f)
     return data
 
 

diff --git a/requirements-tests.txt b/requirements-tests.txt
@@ -6,19 +6,19 @@ pyright==1.1.411
 # Libraries used by our various scripts.
 aiohttp==3.14.1
 grpcio-tools>=1.76.0; python_version < "3.15" # For grpc_tools.protoc
-mypy-protobuf==5.0.0; python_version < "3.15"
-packaging==26.0
+mypy-protobuf==5.1.0; python_version < "3.15"
+packaging==26.2
 pathspec>=1.1.1
 pre-commit
 # Required by create_baseline_stubs.py.
 # stubdefaulter depends on libcst, which does not yet install cleanly on Python 3.15.
-ruff==0.15.8
+ruff==0.15.20
 stubdefaulter==0.1.0; python_version < "3.15"
 termcolor>=2.3
 tomli==2.4.1; python_version < "3.11"
-tomlkit==0.14.0
+tomlkit==0.15.0
 typing_extensions>=4.16.0rc2
-uv==0.11.15
+uv==0.11.26
 
 # Utilities for typeshed infrastructure scripts.
 ts_utils @ file:lib