diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 8444c043d..ea125bbe9 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -10,7 +10,7 @@ repos:
       - id: mixed-line-ending
       - id: check-case-conflict
   - repo: https://github.com/psf/black-pre-commit-mirror
-    rev: 23.12.0 # must match requirements-tests.txt
+    rev: 23.12.1 # must match requirements-tests.txt
     hooks:
       - id: black
         language_version: python3.10
diff --git a/requirements-tests.txt b/requirements-tests.txt
index 2e62c3d68..afab2789c 100644
--- a/requirements-tests.txt
+++ b/requirements-tests.txt
@@ -1,14 +1,14 @@
 # Type checkers and other linters that we test our stubs against. These should always
 # be pinned to a specific version to make failure reproducible. See also the
 # "tool.typeshed" section in pyproject.toml for additional type checkers.
-black==23.12.0           # must match .pre-commit-config.yaml
+black==23.12.1           # must match .pre-commit-config.yaml
 flake8==6.1.0            # must match .pre-commit-config.yaml
 flake8-bugbear==23.12.2  # must match .pre-commit-config.yaml
 flake8-noqa==1.3.2       # must match .pre-commit-config.yaml
 flake8-pyi==23.11.0      # must match .pre-commit-config.yaml
 mypy==1.8.0
 pre-commit-hooks==4.5.0  # must match .pre-commit-config.yaml
-pytype==2023.12.8; platform_system != "Windows" and python_version < "3.12"
+pytype==2023.12.18; platform_system != "Windows" and python_version < "3.12"
 ruff==0.1.9              # must match .pre-commit-config.yaml and tests.yml
 
 # Libraries used by our various scripts.