diff --git a/roles/wsgi_website/tasks/main.yml b/roles/wsgi_website/tasks/main.yml
index 0489dd01f93d375aea3dfddd1b848535fb7fd90f..d2d9a8f521a4767f6112386b2a7e8094a7c33ccd 100644
--- a/roles/wsgi_website/tasks/main.yml
+++ b/roles/wsgi_website/tasks/main.yml
@@ -22,7 +22,7 @@
     state: directory
     owner: "{{ admin }}"
     group: "{{ user }}"
-    mode: 0750
+    mode: "0750"
 
 - name: Deploy profile configuration file for auto-activating the virtual environment
   copy:
@@ -30,7 +30,7 @@
     dest: "{{ home }}/.profile.d/virtualenv.sh"
     owner: root
     group: "{{ user }}"
-    mode: 0640
+    mode: "0640"
 
 - name: Deploy profile configuration file for setting environment variables
   template:
@@ -38,7 +38,7 @@
     dest: "{{ home }}/.profile.d/environment.sh"
     owner: root
     group: "{{ user }}"
-    mode: 0640
+    mode: "0640"
 
 - name: Create WSGI website user
   user:
@@ -71,7 +71,7 @@
     dest: "{{ home }}/.forward"
     owner: root
     group: "{{ user }}"
-    mode: 0640
+    mode: "0640"
 
 - name: Install extra packages for website
   apt:
@@ -128,7 +128,7 @@
     state: directory
     owner: "{{ admin }}"
     group: "{{ user }}"
-    mode: 02750
+    mode: "02750"
 
 - name: Create Python virtual environment
   command: '/usr/bin/virtualenv --python "{{ python_interpreter }}" --prompt "{{ virtualenv_prompt }}" "{{ home }}/virtualenv"'
@@ -143,7 +143,7 @@
     dest: "{{ home }}/virtualenv/.project"
     owner: "{{ admin }}"
     group: "{{ user }}"
-    mode: 0640
+    mode: "0640"
 
 - name: Deploy virtualenv wrapper
   template:
@@ -151,7 +151,7 @@
     dest: "{{ home }}/virtualenv/bin/exec"
     owner: "{{ admin }}"
     group: "{{ user }}"
-    mode: 0750
+    mode: "0750"
 
 - name: Set-up directory for storing requirements file for upgrade checks
   file:
@@ -159,7 +159,7 @@
     state: directory
     owner: root
     group: pipreqcheck
-    mode: 0750
+    mode: "0750"
 
 - name: Deploy WSGI requirements files for upgrade checks
   template:
@@ -167,7 +167,7 @@
     dest: "{{ pip_check_requirements_upgrades_directory }}/{{ fqdn }}/{{ item }}"
     owner: root
     group: pipreqcheck
-    mode: 0640
+    mode: "0640"
   with_items:
     - wsgi_requirements.in
     - wsgi_requirements.txt
@@ -178,7 +178,7 @@
     dest: "{{ home }}/.wsgi_requirements.txt"
     owner: "{{ admin }}"
     group: "{{ user }}"
-    mode: 0640
+    mode: "0640"
 
 - name: Install Gunicorn via requirements file
   become: true
@@ -209,7 +209,7 @@
     dest: "/etc/systemd/system/{{ fqdn }}.socket"
     owner: root
     group: root
-    mode: 0644
+    mode: "0644"
   register: deploy_systemd_socket_configuration
   notify:
     - Reload systemd
@@ -221,7 +221,7 @@
     dest: "/etc/systemd/system/{{ fqdn }}.service"
     owner: root
     group: root
-    mode: 0644
+    mode: "0644"
   register: deploy_systemd_service_configuration
   notify:
     - Reload systemd
@@ -239,7 +239,7 @@
     state: directory
     owner: "{{ admin }}"
     group: "{{ user }}"
-    mode: 02750
+    mode: "02750"
 
 - name: Deploy nginx TLS private key for website
   copy:
@@ -247,7 +247,7 @@
     content: "{{ https_tls_key }}"
     owner: root
     group: root
-    mode: 0640
+    mode: "0640"
   notify:
     - Restart nginx
 
@@ -257,7 +257,7 @@
     content: "{{ https_tls_certificate }}"
     owner: root
     group: root
-    mode: 0644
+    mode: "0644"
   notify:
     - Restart nginx
 
@@ -267,7 +267,7 @@
     dest: "/etc/check_certificate/{{ fqdn }}_https.conf"
     owner: root
     group: root
-    mode: 0644
+    mode: "0644"
 
 - name: Deploy nginx configuration file for website
   template:
@@ -275,7 +275,7 @@
     dest: "/etc/nginx/sites-available/{{ fqdn }}"
     owner: root
     group: root
-    mode: 0640
+    mode: "0640"
     validate: "/usr/local/bin/nginx_verify_site.sh -n '{{ fqdn }}' %s"
   notify:
     - Restart nginx