diff --git a/charts/coredns/Chart.yaml b/charts/coredns/Chart.yaml
index 111e962..14831f5 100644
--- a/charts/coredns/Chart.yaml
+++ b/charts/coredns/Chart.yaml
@@ -21,4 +21,4 @@ name: coredns
 sources:
 - https://github.com/coredns/coredns
 type: application
-version: 1.33.1
+version: 1.33.0
diff --git a/charts/coredns/values.yaml b/charts/coredns/values.yaml
index 24a3a1a..aa0497b 100644
--- a/charts/coredns/values.yaml
+++ b/charts/coredns/values.yaml
@@ -404,15 +404,16 @@ cilium:
       toPorts:
       - port: "53"
         protocol: "UDP"
-        name: "dns-udp"
+        name: "udp-53"
       - port: "53"
         protocol: "TCP"
-        name: "dns-tcp"
+        name: "tcp-53"
     backend:
       toPorts:
+      # The names of port should be identical with the container port name in pods
       - port: "53"
         protocol: "UDP"
-        name: "dns-udp"
+        name: "udp-53"
       - port: "53"
         protocol: "TCP"
-        name: "dns-tcp"
+        name: "tcp-53"