diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e9544ed..b4a2701 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,9 +16,9 @@ jobs:
         python: ['3.7', '3.8', '3.9', '3.10', '3.11']
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Setup python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
         with:
           python-version: '${{ matrix.python }}'
       - name: Run tests
@@ -48,14 +48,14 @@ jobs:
             extra_name: ', check docs'
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Setup python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
         if: "!endsWith(matrix.python, '-dev')"
         with:
           python-version: '${{ matrix.python }}'
       - name: Setup python (dev)
-        uses: deadsnakes/action@v2.0.2
+        uses: deadsnakes/action@v2.1.1
         if: endsWith(matrix.python, '-dev')
         with:
           python-version: '${{ matrix.python }}'
@@ -77,9 +77,9 @@ jobs:
         python: ['3.7', '3.8', '3.9', '3.10', '3.11']
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Setup python
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v4
         with:
           python-version: '${{ matrix.python }}'
       - name: Run tests
diff --git a/ci.sh b/ci.sh
index aae8b3c..0e02981 100755
--- a/ci.sh
+++ b/ci.sh
@@ -30,7 +30,7 @@ python setup.py sdist --formats=zip
 python -m pip install dist/*.zip
 
 if [ "$CHECK_FORMATTING" = "1" ]; then
-    pip install black
+    pip install black~=23.0
     if ! black --check . ; then
         cat <<EOF
 !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
diff --git a/docs-requirements.txt b/docs-requirements.txt
index ae0c01d..299a963 100644
--- a/docs-requirements.txt
+++ b/docs-requirements.txt
@@ -1,6 +1,6 @@
 #
-# This file is autogenerated by pip-compile with python 3.8
-# To update, run:
+# This file is autogenerated by pip-compile with Python 3.10
+# by the following command:
 #
 #    pip-compile docs-requirements.in
 #
@@ -40,8 +40,6 @@ idna==3.4
     #   trio
 imagesize==1.4.1
     # via sphinx
-importlib-metadata==5.0.0
-    # via sphinx
 incremental==22.10.0
     # via towncrier
 iniconfig==1.1.1
@@ -109,8 +107,6 @@ trio==0.22.0
     # via -r docs-requirements.in
 urllib3==1.26.12
     # via requests
-zipp==3.10.0
-    # via importlib-metadata
 
 # The following packages are considered to be unsafe in a requirements file:
 # setuptools
diff --git a/test-requirements.txt b/test-requirements.txt
index b1d1509..0d4be55 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,3 +1,3 @@
-pytest==7.2.0
+pytest==7.3.1
 pytest-cov==4.0.0
-hypothesis==6.56.4
+hypothesis==6.72.0