diff --git a/charts/premium/authelia/Chart.yaml b/charts/premium/authelia/Chart.yaml
index 78e24f8ccdc..b0b2465b89b 100644
--- a/charts/premium/authelia/Chart.yaml
+++ b/charts/premium/authelia/Chart.yaml
@@ -51,4 +51,4 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/premium/authelia
   - https://ghcr.io/authelia/authelia
 type: application
-version: 23.12.1
+version: 23.13.0
diff --git a/charts/premium/authelia/questions.yaml b/charts/premium/authelia/questions.yaml
index e5276beb285..e887aa38086 100644
--- a/charts/premium/authelia/questions.yaml
+++ b/charts/premium/authelia/questions.yaml
@@ -1142,6 +1142,19 @@ questions:
                                           type: string
                                           default: "form_post"
                                           required: true
+                                - variable: token_endpoint_auth_method
+                                  description: "The supported client authentication methods this client supports."
+                                  label: "token_endpoint_auth_method"
+                                  schema:
+                                    type: list
+                                    default: []
+                                    items:
+                                      - variable: methodEntry
+                                        label: "Method"
+                                        schema:
+                                          type: string
+                                          default: "client_secret_basic"
+                                          required: true
                                 - variable: require_pkce
                                   label: "Require PKCE"
                                   description: "This configuration option enforces the use of PKCE for this registered client."
diff --git a/charts/premium/authelia/templates/_configmap.tpl b/charts/premium/authelia/templates/_configmap.tpl
index 45ff8fe98ce..f12bec74c61 100644
--- a/charts/premium/authelia/templates/_configmap.tpl
+++ b/charts/premium/authelia/templates/_configmap.tpl
@@ -279,6 +279,12 @@ data:
             - {{ . }}
           {{- end }}
           {{- end }}
+          {{- if $client.token_endpoint_auth_method }}
+          token_endpoint_auth_method:
+          {{- range $client.token_endpoint_auth_method }}
+            - {{ . }}
+          {{- end }}
+          {{- end }}
           userinfo_signing_algorithm: {{ $client.userinfo_signing_algorithm | default "none" }}
           {{- if $client.require_pkce }}
           require_pkce: {{ $client.require_pkce }}
diff --git a/charts/premium/authelia/values.yaml b/charts/premium/authelia/values.yaml
index c9b82260e9f..f5f28cbd0c7 100644
--- a/charts/premium/authelia/values.yaml
+++ b/charts/premium/authelia/values.yaml
@@ -570,6 +570,12 @@ identity_providers:
 #   - query
 #   - fragment
 
+## Client Authentication Method configures which client authentication methods this client supports.
+## It's not recommended to configure this unless you know what you're doing.
+# token_endpoint_auth_method:
+#   - client_secret_basic
+#   - client_secret_post
+
 ## The algorithm used to sign userinfo endpoint responses for this client, either none or RS256.
 # userinfo_signing_algorithm: none