diff --git a/manifests/prometheus-rules.yaml b/manifests/prometheus-rules.yaml
index bfb77af6de4662bf3dda0f5a65094f55af1bb9fc..6ae126dca12f455856ad643c416c215ffde6a4d5 100644
--- a/manifests/prometheus-rules.yaml
+++ b/manifests/prometheus-rules.yaml
@@ -739,7 +739,7 @@ spec:
           components running.
         runbook_url: https://github.com/kubernetes-monitoring/kubernetes-mixin/tree/master/runbook.md#alert-name-kubeversionmismatch
       expr: |
-        count(count by (gitVersion) (label_replace(kubernetes_build_info{job!="kube-dns"},"gitVersion","$1","gitVersion","(v[0-9]*.[0-9]*.[0-9]*).*"))) > 1
+        count(count by (gitVersion) (label_replace(kubernetes_build_info{job!~"kube-dns|coredns"},"gitVersion","$1","gitVersion","(v[0-9]*.[0-9]*.[0-9]*).*"))) > 1
       for: 1h
       labels:
         severity: warning
@@ -1131,7 +1131,7 @@ spec:
         message: Clock skew detected on node-exporter {{ $labels.namespace }}/{{ $labels.pod
           }}. Ensure NTP is configured correctly on this host.
       expr: |
-        abs(node_timex_offset_seconds{job="node-exporter"}) > 0.03
+        abs(node_timex_offset_seconds{job="node-exporter"}) > 0.05
       for: 2m
       labels:
         severity: warning