diff --git a/.github/workflows/copilot-setup-steps.yml b/.github/workflows/copilot-setup-steps.yml
index 3141a97b..9317d74f 100644
--- a/.github/workflows/copilot-setup-steps.yml
+++ b/.github/workflows/copilot-setup-steps.yml
@@ -40,7 +40,7 @@ jobs:
           cache-dependency-path: 'pyproject.toml'
 
       - name: Cache system dependencies
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: /var/cache/apt
           key: ${{ runner.os }}-apt-copilot-${{ hashFiles('scripts/install-deps.sh') }}
diff --git a/.github/workflows/lint-check.yml b/.github/workflows/lint-check.yml
index 2793ec44..6a696911 100644
--- a/.github/workflows/lint-check.yml
+++ b/.github/workflows/lint-check.yml
@@ -32,7 +32,7 @@ jobs:
         cache-dependency-path: 'pyproject.toml'
 
     - name: 'Cache system dependencies'
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: /var/cache/apt
         key: ${{ runner.os }}-apt-lint-${{ hashFiles('scripts/install-deps.sh') }}
@@ -73,7 +73,7 @@ jobs:
         cache-dependency-path: 'pyproject.toml'
 
     - name: 'Cache system dependencies'
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: /var/cache/apt
         key: ${{ runner.os }}-apt-lint-${{ hashFiles('scripts/install-deps.sh') }}
diff --git a/.github/workflows/test-coverage.yml b/.github/workflows/test-coverage.yml
index cbac7ede..858dbb59 100644
--- a/.github/workflows/test-coverage.yml
+++ b/.github/workflows/test-coverage.yml
@@ -145,14 +145,14 @@ jobs:
         # don't require a token when not pushing pages
 
       - name: Upload benchmark baseline cache
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         if: github.event_name == 'push' && github.ref == 'refs/heads/main'
         with:
           path: ./cache
           key: ${{ runner.os }}-benchmark
 
       - name: Download previous benchmark data
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         if: github.event_name == 'pull_request'
         with:
           path: ./cache
@@ -383,7 +383,7 @@ jobs:
           pip install -e ".[test]"
 
       - name: Cache Playwright browsers
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         id: playwright-cache
         with:
           path: ~/.cache/ms-playwright