diff --git a/charts/external-dns/README.md b/charts/external-dns/README.md
index 0bbae92591..f5ec38d04e 100644
--- a/charts/external-dns/README.md
+++ b/charts/external-dns/README.md
@@ -187,6 +187,34 @@ If `namespaced` is set to `true`, please ensure that `sources` my only contains
 | txtPrefix | string | `nil` | Specify a prefix for the domain names of TXT records created for the `txt` registry. Mutually exclusive with `txtSuffix`. |
 | txtSuffix | string | `nil` | Specify a suffix for the domain names of TXT records created for the `txt` registry. Mutually exclusive with `txtPrefix`. |
 
+## Usage
+
+### Configure `extraArgs`
+
+An array or map can be used, with maps allowing for value overrides; maps also support slice values to use the same arg multiple times.
+
+Example array:
+
+```yaml
+extraArgs:
+  - --zone-id-filter=/hostedzone/Z00001
+  - --zone-id-filter=/hostedzone/Z00002
+  - --zone-id-filter=/hostedzone/Z00003
+```
+
+Eample map: (supported values for map are strings, list of strings, and boolean)
+
+```yaml
+extraArgs:
+  extraArgA: valueA # results: "--extraArgA=valueA"
+  extraArgB: # rendered: "--extraArgB=valueB-1 --extraArgB=valueB-2"
+    - valueB-1
+    - valueB-2
+  extraArgC: true # results: "--extraArgC"
+  extraArgD: false # results: "--no-extraArgD"
+  extraArgE: # results: "--extraArgE"
+```
+
 ----------------------------------------------
 
 Autogenerated from chart metadata using [helm-docs](https://github.com/norwoodj/helm-docs/).
diff --git a/charts/external-dns/README.md.gotmpl b/charts/external-dns/README.md.gotmpl
index fc4ada14be..8f7021e80a 100644
--- a/charts/external-dns/README.md.gotmpl
+++ b/charts/external-dns/README.md.gotmpl
@@ -89,6 +89,34 @@ If `namespaced` is set to `true`, please ensure that `sources` my only contains
 
 {{ template "chart.valuesSection" . }}
 
+## Usage
+
+### Configure `extraArgs`
+
+An array or map can be used, with maps allowing for value overrides; maps also support slice values to use the same arg multiple times.
+
+Example array:
+
+```yaml
+extraArgs:
+  - --zone-id-filter=/hostedzone/Z00001
+  - --zone-id-filter=/hostedzone/Z00002
+  - --zone-id-filter=/hostedzone/Z00003
+```
+
+Eample map: (supported values for map are strings, list of strings, and boolean)
+
+```yaml
+extraArgs:
+  extraArgA: valueA # results: "--extraArgA=valueA"
+  extraArgB: # rendered: "--extraArgB=valueB-1 --extraArgB=valueB-2"
+    - valueB-1
+    - valueB-2
+  extraArgC: true # results: "--extraArgC"
+  extraArgD: false # results: "--no-extraArgD"
+  extraArgE: # results: "--extraArgE"
+```
+
 ----------------------------------------------
 
 Autogenerated from chart metadata using [helm-docs](https://github.com/norwoodj/helm-docs/).
diff --git a/charts/external-dns/templates/deployment.yaml b/charts/external-dns/templates/deployment.yaml
index b213f754fd..a8877437a9 100644
--- a/charts/external-dns/templates/deployment.yaml
+++ b/charts/external-dns/templates/deployment.yaml
@@ -140,6 +140,12 @@ spec:
             {{- range $value }}
             - --{{ $key }}={{ tpl (. | toString) $ }}
             {{- end }}
+            {{- else if kindIs "bool" $value }}
+            {{- if $value }}
+            - --{{ $key }}
+            {{- else }}
+            - --no-{{ $key }}
+            {{- end }}
             {{- else }}
             - --{{ $key }}={{ tpl ($value | toString) $ }}
             {{- end }}
diff --git a/charts/external-dns/tests/deployment-flags_test.yaml b/charts/external-dns/tests/deployment-flags_test.yaml
index 5ea1115304..f9b916bd6a 100644
--- a/charts/external-dns/tests/deployment-flags_test.yaml
+++ b/charts/external-dns/tests/deployment-flags_test.yaml
@@ -6,9 +6,9 @@ release:
 tests:
   - it: should provide expected default flags
     asserts:
-      - exists :
+      - exists:
           path: spec.template.spec.containers[?(@.name == "external-dns")]
-      - equal :
+      - equal:
           path: spec.template.spec.containers[?(@.name == "external-dns")].args
           value:
             - --log-level=info
@@ -25,9 +25,9 @@ tests:
       txtPrefix: ""
       txtSuffix: "test-suffix"
     asserts:
-      - exists :
+      - exists:
           path: spec.template.spec.containers[?(@.name == "external-dns")]
-      - equal :
+      - equal:
           path: spec.template.spec.containers[?(@.name == "external-dns")].args
           value:
             - --log-level=info
@@ -50,7 +50,7 @@ tests:
     set:
       txtSuffix: "custom-suffix"
     asserts:
-      - exists :
+      - exists:
           path: spec.template.spec.containers[?(@.name == "external-dns")]
       - contains:
           path: spec.template.spec.containers[?(@.name == "external-dns")].args
@@ -103,14 +103,13 @@ tests:
             - --zone-id-filter=/hostedzone/Z00004
             - --zone-id-filter=/hostedzone/Z00005
 
-
   - it: should allow 'extraArgs' to be a slice
     set:
       extraArgs:
-       - --extraArgA=valueA
-       - --extraArgB=valueB
-       - --extraArgC=valueC-1
-       - --extraArgC=valueC-2
+        - --extraArgA=valueA
+        - --extraArgB=valueB
+        - --extraArgC=valueC-1
+        - --extraArgC=valueC-2
 
     asserts:
       - equal:
@@ -129,7 +128,6 @@ tests:
             - --extraArgC=valueC-1
             - --extraArgC=valueC-2
 
-
   - it: should allow 'extraArgs' to be a map with its entries potentially being slices (lists) themselves
     set:
       extraArgs:
@@ -156,13 +154,37 @@ tests:
             - --extraArgC=valueC-1
             - --extraArgC=valueC-2
 
+  - it: should allow 'extraArgs' to be a map with its entries potentially being boolean
+    set:
+      extraArgs:
+        extraArgA:
+        no-extraArgB:
+        extraArgC: true
+        extraArgD: false
+
+    asserts:
+      - equal:
+          path: spec.template.spec.containers[?(@.name == "external-dns")].args
+          value:
+            - --log-level=info
+            - --log-format=text
+            - --interval=1m
+            - --source=service
+            - --source=ingress
+            - --policy=upsert-only
+            - --registry=txt
+            - --provider=aws
+            - --extraArgA
+            - --extraArgC
+            - --no-extraArgD
+            - --no-extraArgB
 
   - it: should throw error when txtPrefix and txtSuffix are set
     set:
-        txtPrefix: "test-prefix"
-        txtSuffix: "test-suffix"
+      txtPrefix: "test-prefix"
+      txtSuffix: "test-suffix"
     asserts:
-     - failedTemplate:
+      - failedTemplate:
           errorMessage: "'txtPrefix' and 'txtSuffix' are mutually exclusive"
 
   - it: should configure custom annotation prefix