diff --git a/authelia/configuration.yml b/authelia/configuration.yml
index 4c159f0..d9e2571 100644
--- a/authelia/configuration.yml
+++ b/authelia/configuration.yml
@@ -79,6 +79,7 @@ identity_providers:
       - offline_access
       authorization_policy: one_factor
       pre_configured_consent_duration: 8h
+      token_endpoint_auth_method: client_secret_post
     - id: kubernetes
       description: Kubernetes
       public: true