diff --git a/cephadm-preflight.yml b/cephadm-preflight.yml
index e596f37..e39510e 100644
--- a/cephadm-preflight.yml
+++ b/cephadm-preflight.yml
@@ -257,11 +257,17 @@
 
         - name: install prerequisites packages
           apt:
-            name: "{{ ['python3','cephadm','ceph-common'] }}"
+            name: "{{ ['python3','chrony'] + ceph_pkgs }}"
             state: "{{ (upgrade_ceph_packages | bool) | ternary('latest', 'present') }}"
             update_cache: true
           register: result
           until: result is succeeded
+          
+        - name: ensure chronyd is running
+          service:
+            name: chronyd
+            state: started
+            enabled: true
 
         - name: install container engine
           block: