diff --git a/tasks/preflight-checks.yml b/tasks/preflight-checks.yml
index e31d835..6d3d72c 100644
--- a/tasks/preflight-checks.yml
+++ b/tasks/preflight-checks.yml
@@ -91,7 +91,7 @@
 - name: "[PREFLIGHT] Validate IP address format for clones"
   ansible.builtin.assert:
     that:
-      - "item.ip | ipaddr"
+      - "item.ip | ansible.utils.ipaddr"
     fail_msg: "Invalid IP address for clone {{ item.id }}: {{ item.ip }}"
   loop: "{{ clones }}"
   when: create_clones | default(false)
@@ -99,20 +99,20 @@
 - name: "[PREFLIGHT] Validate static IP address format (if not DHCP)"
   ansible.builtin.assert:
     that:
-      - "ip_address | ipaddr"
+      - "ip_address | ansible.utils.ipaddr"
     fail_msg: "Invalid static IP address: {{ ip_address }}"
   when: ip_mode == 'static'
 
 - name: "[PREFLIGHT] Validate gateway IP address"
   ansible.builtin.assert:
     that:
-      - "gateway | ipaddr"
+      - "gateway | ansible.utils.ipaddr"
     fail_msg: "Invalid gateway IP address: {{ gateway }}"
 
 - name: "[PREFLIGHT] Validate DNS servers"
   ansible.builtin.assert:
     that:
-      - "item | ipaddr"
+      - "item | ansible.utils.ipaddr"
     fail_msg: "Invalid DNS server IP: {{ item }}"
   loop: "{{ dns }}"
   when: dns is defined and dns | length > 0