diff --git a/authelia/config/configuration.yaml b/authelia/config/configuration.yaml
index 3b7b5b9..796ea51 100644
--- a/authelia/config/configuration.yaml
+++ b/authelia/config/configuration.yaml
@@ -69,7 +69,7 @@ identity_providers:
         client_secret: '{{ secret "/config/secrets/oidc_open_webui" }}'
         public: false
         authorization_policy: one_factor
-        token_endpoint_auth_method: client_secret_post
+        token_endpoint_auth_method: client_secret_basic
         redirect_uris:
           - https://open-webui.kolpacksoftware.com/oauth/oidc/callback
         scopes: