diff --git a/.github/workflows/cleanup-repo.yaml b/.github/workflows/cleanup-repo.yaml
index 98c1719e..5ddd154a 100644
--- a/.github/workflows/cleanup-repo.yaml
+++ b/.github/workflows/cleanup-repo.yaml
@@ -14,7 +14,7 @@ jobs:
     steps:
 
       # Mark issues and PRs with no activity as stale after a while, and close them after a while longer
-      - uses: actions/stale@v3
+      - uses: actions/stale@v9
         with:
           stale-issue-message: 'Marking issue as stale'
           stale-pr-message: 'Marking PR as stale'
diff --git a/.github/workflows/deploy.yaml b/.github/workflows/deploy.yaml
index 128915d7..0e146ce6 100644
--- a/.github/workflows/deploy.yaml
+++ b/.github/workflows/deploy.yaml
@@ -27,16 +27,16 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up QEMU (required for arm build)
-        uses: docker/setup-qemu-action@v2
+        uses: docker/setup-qemu-action@v3
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
 
       - name: Login to DockerHub
-        uses: docker/login-action@v2
+        uses: docker/login-action@v3
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 9f896fa9..8d3a18aa 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -18,14 +18,14 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Get Composer Cache Directory
         id: composer-cache
         run: |
           echo "dir=$(make composer-cache-dir)" >> $GITHUB_OUTPUT
 
-      - uses: actions/cache@v3
+      - uses: actions/cache@v4
         with:
           path: ${{ steps.composer-cache.outputs.dir }}
           key: ${{ runner.os }}-composer-${{ hashFiles('**/composer.lock') }}
diff --git a/src/PHPDocker/Template/dockerfile-php-fpm.conf.twig b/src/PHPDocker/Template/dockerfile-php-fpm.conf.twig
index 038b53af..9b6f5dd5 100644
--- a/src/PHPDocker/Template/dockerfile-php-fpm.conf.twig
+++ b/src/PHPDocker/Template/dockerfile-php-fpm.conf.twig
@@ -4,7 +4,7 @@ WORKDIR "{{ dockerWorkingDir }}"
 {% if packages %}
 RUN apt-get update \
     && apt-get -y --no-install-recommends install \
-        {{ packages | join(' \\ \n        ') }} \
+        {{ packages | join(' \\\n        ') }} \
     && apt-get clean \
     && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* /usr/share/doc/*
 {% endif %}