diff --git a/.github/workflows/gh-pages.yaml b/.github/workflows/gh-pages.yaml
index 6799e663..26ecbdf3 100644
--- a/.github/workflows/gh-pages.yaml
+++ b/.github/workflows/gh-pages.yaml
@@ -20,17 +20,17 @@ jobs:
         echo "default_branch=$DEFAULT_BRANCH" >> $GITHUB_ENV
         echo "default_branch_ref=refs/heads/$DEFAULT_BRANCH" >> $GITHUB_ENV
 
-    - name: Set up Python 3.6
+    - name: Set up Python
       uses: actions/setup-python@v5
       with:
-        python-version: "3.6"
+        python-version: "3.8"
 
     - name: Get pip cache dir
       id: pip-cache
       run: echo "::set-output name=dir::$(pip cache dir)"
 
     - name: pip cache
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       with:
         path: ${{ steps.pip-cache.outputs.dir }}
         key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements*.txt') }}
@@ -72,7 +72,7 @@ jobs:
         echo "</html>" >> $FILE;
 
     - name: Deploy
-      uses: peaceiris/actions-gh-pages@v3
+      uses: peaceiris/actions-gh-pages@v4
       if: github.ref == env.default_branch_ref
       with:
         github_token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 1201f946..6a1ab3e6 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -58,7 +58,7 @@ jobs:
       run: echo "::set-output name=dir::$(pip cache dir)"
 
     - name: pip cache
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       with:
         path: ${{ steps.pip-cache.outputs.dir }}
         key: ${{ runner.os }}-pip-py${{ matrix.python-version }}-${{ hashFiles('**/requirements*.txt') }}