diff --git a/skylab/infra/playbooks/bootstrap.yml b/skylab/infra/playbooks/bootstrap.yml
index 5d69805..160cfbb 100644
--- a/skylab/infra/playbooks/bootstrap.yml
+++ b/skylab/infra/playbooks/bootstrap.yml
@@ -31,6 +31,8 @@
   - name: Test connection
     delegate_to: bootstrap
     delegate_facts: true
+    vars:
+      ansible_host_key_checking: false
     ansible.builtin.ping: {}
 
 - name: Bootstrap remote