diff --git a/charts/external-dns/CHANGELOG.md b/charts/external-dns/CHANGELOG.md
index ef77ad7039..9729f42213 100644
--- a/charts/external-dns/CHANGELOG.md
+++ b/charts/external-dns/CHANGELOG.md
@@ -21,6 +21,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - Avoid creating cluster-scoped RBAC for Gateway API sources when running namespaced with `gatewayNamespace` set. Namespace listing permissions are now only added when `gatewayNamespace` is unset. ([#5843](https://github.com/kubernetes-sigs/external-dns/pull/5843)) _@TobyTheHutt_
+- Ensure container arguments are passed in as strings ([#6264](https://github.com/kubernetes-sigs/external-dns/pull/6264)) _@KhooHaoYit_
 
 ## [v1.20.0]
 
diff --git a/charts/external-dns/templates/deployment.yaml b/charts/external-dns/templates/deployment.yaml
index b213f754fd..06b3ff1468 100644
--- a/charts/external-dns/templates/deployment.yaml
+++ b/charts/external-dns/templates/deployment.yaml
@@ -150,7 +150,7 @@ spec:
             {{- end }}
             {{- if kindIs "slice" .Values.extraArgs }}
             {{- range .Values.extraArgs }}
-            - {{ tpl . $ }}
+            - {{ tpl . $ | quote }}
             {{- end }}
             {{- end }}
           ports:
diff --git a/charts/external-dns/tests/deployment-flags_test.yaml b/charts/external-dns/tests/deployment-flags_test.yaml
index 5ea1115304..095883a76d 100644
--- a/charts/external-dns/tests/deployment-flags_test.yaml
+++ b/charts/external-dns/tests/deployment-flags_test.yaml
@@ -202,3 +202,15 @@ tests:
       - contains:
           path: spec.template.spec.containers[?(@.name == "external-dns")].args
           content: "--source=ingress"
+
+  - it: should format extraArgs as list of strings
+    set:
+      provider:
+        name: cloudflare
+      extraArgs:
+        - --cloudflare-dns-records-per-page
+        - "5000"
+    asserts:
+      - contains:
+          path: spec.template.spec.containers[?(@.name == "external-dns")].args
+          content: "5000"