diff --git a/charts/premium/authelia/Chart.yaml b/charts/premium/authelia/Chart.yaml
index b0b2465b89b..75bf802c0a6 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: 23.13.0
+version: 23.13.1
diff --git a/charts/premium/authelia/questions.yaml b/charts/premium/authelia/questions.yaml
index e887aa38086..877e920006e 100644
--- a/charts/premium/authelia/questions.yaml
+++ b/charts/premium/authelia/questions.yaml
@@ -1146,15 +1146,19 @@ questions:
                                   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
+                                    type: string
+                                    default: ""
+                                    enum:
+                                      - value: "client_secret_basic"
+                                        description: "client_secret_basic"
+                                      - value: "client_secret_post"
+                                        description: "client_secret_post"
+                                      - value: "client_secret_jwt"
+                                        description: "client_secret_jwt"
+                                      - value: "private_key_jwt"
+                                        description: "private_key_jwt"
+                                      - value: "none"
+                                        description: "none"
                                 - 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 f12bec74c61..6c2c0c99e25 100644
--- a/charts/premium/authelia/templates/_configmap.tpl
+++ b/charts/premium/authelia/templates/_configmap.tpl
@@ -279,11 +279,8 @@ data:
             - {{ . }}
           {{- end }}
           {{- end }}
-          {{- if $client.token_endpoint_auth_method }}
-          token_endpoint_auth_method:
-          {{- range $client.token_endpoint_auth_method }}
-            - {{ . }}
-          {{- end }}
+          {{- with $client.token_endpoint_auth_method }}
+          token_endpoint_auth_method: {{ . }}
           {{- end }}
           userinfo_signing_algorithm: {{ $client.userinfo_signing_algorithm | default "none" }}
           {{- if $client.require_pkce }}
diff --git a/charts/premium/authelia/values.yaml b/charts/premium/authelia/values.yaml
index f5f28cbd0c7..143eb55a091 100644
--- a/charts/premium/authelia/values.yaml
+++ b/charts/premium/authelia/values.yaml
@@ -572,9 +572,7 @@ identity_providers:
 
 ## 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
+# token_endpoint_auth_method: client_secret_basic
 
 ## The algorithm used to sign userinfo endpoint responses for this client, either none or RS256.
 # userinfo_signing_algorithm: none