diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index f7b8344..7092a13 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -8,9 +8,9 @@ jobs:
     runs-on: ubuntu-latest
     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: "3.10"
     - name: Install nox
@@ -24,9 +24,9 @@ jobs:
     runs-on: ubuntu-latest
     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: "3.10"
     - name: Install nox
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 1e8b05c..d2aee5b 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -8,9 +8,9 @@ jobs:
     runs-on: ubuntu-latest
     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: "3.10"
     - name: Install nox
diff --git a/.github/workflows/unittest.yml b/.github/workflows/unittest.yml
index 074ee25..612d89c 100644
--- a/.github/workflows/unittest.yml
+++ b/.github/workflows/unittest.yml
@@ -11,9 +11,9 @@ jobs:
         python: ['3.6', '3.7', '3.8', '3.9', '3.10']
     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: ${{ matrix.python }}
     - name: Install nox
@@ -26,7 +26,7 @@ jobs:
       run: |
         nox -s unit-${{ matrix.python }}
     - name: Upload coverage results
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v3
       with:
         name: coverage-artifacts
         path: .coverage-${{ matrix.python }}
@@ -37,9 +37,9 @@ jobs:
         - unit
     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: "3.10"
     - name: Install coverage
@@ -47,7 +47,7 @@ jobs:
         python -m pip install --upgrade setuptools pip wheel
         python -m pip install coverage
     - name: Download coverage results
-      uses: actions/download-artifact@v2
+      uses: actions/download-artifact@v3
       with:
         name: coverage-artifacts
         path: .coverage-results/
diff --git a/.kokoro/docker/docs/Dockerfile b/.kokoro/docker/docs/Dockerfile
index 4e1b1fb..47b6f31 100644
--- a/.kokoro/docker/docs/Dockerfile
+++ b/.kokoro/docker/docs/Dockerfile
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from ubuntu:20.04
+from ubuntu:22.04
 
 ENV DEBIAN_FRONTEND noninteractive