diff --git a/ansible-playbooks/roles/clean_up/tasks/main.yml b/ansible-playbooks/roles/clean_up/tasks/main.yml
index 781de80..caea116 100644
--- a/ansible-playbooks/roles/clean_up/tasks/main.yml
+++ b/ansible-playbooks/roles/clean_up/tasks/main.yml
@@ -87,3 +87,11 @@
   failed_when: false
   changed_when: false
   become: true
+
+- name: Remove machines from known_hosts
+  ansible.builtin.known_hosts:
+    path: "{{ ssh_key_path }}/known_hosts"
+    name: "{{ item.host_ip }}"
+    state: absent
+  loop: "{{ common_tap_dev_map.values() }}"
+  become: true