diff --git a/roles/firewall/tasks/main.yml b/roles/firewall/tasks/main.yml
index 499c2f2da9cb427d1e8b797502587139bbd372d2..04490e10b627303f711704a9ef6d5d8a69f0b085 100644
--- a/roles/firewall/tasks/main.yml
+++ b/roles/firewall/tasks/main.yml
@@ -3,7 +3,7 @@
 - name: Get HAProxy archive key
   ansible.builtin.apt_key:
     id: AEF2348766F371C689A7360095A42FE8353525F9
-    url: https://haproxy.debian.net/bernat.debian.org.gpg
+    url: deb https://haproxy.debian.net/bernat.debian.org.gpg
     state: present
 - name: Add HAProxy apt repo
   ansible.builtin.apt_repository: