diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e9e0d5b3..ade1744f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -49,13 +49,26 @@ jobs:
           coverage: none
 
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
+
+      - name: Cache module compilation
+        uses: actions/cache@v3
+        with:
+          path: /tmp/varnish-modules-${{ matrix.varnish-modules-version }}
+          key: varnish-modules-${{ matrix.varnish-modules-version }}
 
       - name: Setup Varnish and Nginx
         run: |
           sh ${GITHUB_WORKSPACE}/.github/workflows/setup-varnish.sh
           sh ${GITHUB_WORKSPACE}/.github/workflows/setup-nginx.sh
 
+      - name: Cache Vendor
+        id: cache-vendor
+        uses: actions/cache@v3
+        with:
+          path: vendor
+          key: ${{ runner.os }}-vendor
+
       - name: Install composer dependencies
         env:
           SYMFONY_REQUIRE: ${{ matrix.symfony-version }}
@@ -88,13 +101,26 @@ jobs:
           coverage: none
 
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
+
+      - name: Cache module compilation
+        uses: actions/cache@v3
+        with:
+          path: /tmp/varnish-modules-${{ matrix.varnish-modules-version }}
+          key: varnish-modules-${{ matrix.varnish-modules-version }}
 
       - name: Setup Varnish and Nginx
         run: |
           sh ${GITHUB_WORKSPACE}/.github/workflows/setup-varnish-legacy.sh
           sh ${GITHUB_WORKSPACE}/.github/workflows/setup-nginx.sh
 
+      - name: Cache Vendor
+        id: cache-vendor
+        uses: actions/cache@v3
+        with:
+          path: vendor
+          key: ${{ runner.os }}-vendor
+
       - name: Install composer dependencies
         # Lowest discovery can end up with an incompatible psr7 implementation, see discussion in https://github.com/FriendsOfSymfony/FOSHttpCache/pull/567
         run: |
@@ -126,13 +152,20 @@ jobs:
           coverage: none
 
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Setup Varnish and Nginx
         run: |
           sh ${GITHUB_WORKSPACE}/.github/workflows/setup-varnish-legacy.sh
           sh ${GITHUB_WORKSPACE}/.github/workflows/setup-nginx.sh
 
+      - name: Cache Vendor
+        id: cache-vendor
+        uses: actions/cache@v3
+        with:
+          path: vendor
+          key: ${{ runner.os }}-vendor
+
       - name: Install composer dependencies
         run: |
           composer require --no-update --no-interaction "guzzlehttp/psr7:2.*"
@@ -163,13 +196,20 @@ jobs:
           coverage: none
 
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       - name: Setup Varnish and Nginx
         run: |
           sh ${GITHUB_WORKSPACE}/.github/workflows/setup-varnish-legacy.sh
           sh ${GITHUB_WORKSPACE}/.github/workflows/setup-nginx.sh
 
+      - name: Cache Vendor
+        id: cache-vendor
+        uses: actions/cache@v3
+        with:
+          path: vendor
+          key: ${{ runner.os }}-vendor-lowest
+
       - name: Install composer dependencies
         run: |
           composer require --no-update --no-interaction "guzzlehttp/psr7:2.*"
@@ -194,13 +234,26 @@ jobs:
           coverage: xdebug
 
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
+
+      - name: Cache module compilation
+        uses: actions/cache@v3
+        with:
+          path: /tmp/varnish-modules-${{ matrix.varnish-modules-version }}
+          key: varnish-modules-${{ matrix.varnish-modules-version }}
 
       - name: Setup Varnish and Nginx
         run: |
           sh ${GITHUB_WORKSPACE}/.github/workflows/setup-varnish.sh
           sh ${GITHUB_WORKSPACE}/.github/workflows/setup-nginx.sh
 
+      - name: Cache Vendor
+        id: cache-vendor
+        uses: actions/cache@v3
+        with:
+          path: vendor
+          key: ${{ runner.os }}-vendor
+
       - name: Install dependencies
         run: |
           composer require "friends-of-phpspec/phpspec-code-coverage:^6.3.0" --no-interaction --no-update
diff --git a/.github/workflows/static.yml b/.github/workflows/static.yml
index 7cbca592..91266ca5 100644
--- a/.github/workflows/static.yml
+++ b/.github/workflows/static.yml
@@ -18,6 +18,13 @@ jobs:
       - name: Pull in optional dependencies
         run: composer require --no-update phpunit/phpunit toflar/psr6-symfony-http-cache-store:^4.2
 
+      - name: Cache Vendor
+        id: cache-vendor
+        uses: actions/cache@v3
+        with:
+          path: vendor
+          key: ${{ runner.os }}-vendor
+
       - name: PHPStan
         uses: docker://oskarstark/phpstan-ga
         with:
@@ -36,6 +43,13 @@ jobs:
       - name: Pull in optional dependencies
         run: composer require --no-update phpunit/phpunit toflar/psr6-symfony-http-cache-store:^4.2
 
+      - name: Cache Vendor
+        id: cache-vendor
+        uses: actions/cache@v3
+        with:
+          path: vendor
+          key: ${{ runner.os }}-vendor
+
       - name: PHPStan
         uses: docker://oskarstark/phpstan-ga
         with: