diff --git a/rootfs/etc/confd/templates/dovecot-oauth2.conf.ext.tmpl b/rootfs/etc/confd/templates/dovecot-oauth2.conf.ext.tmpl
index e20b014..ac41235 100644
--- a/rootfs/etc/confd/templates/dovecot-oauth2.conf.ext.tmpl
+++ b/rootfs/etc/confd/templates/dovecot-oauth2.conf.ext.tmpl
@@ -1,7 +1,11 @@
+grant_url = {{ getenv "GRANT_URL" }}
+client_id = {{ getenv "CLIENT_ID" }}
+client_secret = {{ getenv "CLIENT_SECRET" }}
 tokeninfo_url = {{ getenv "TOKENINFO_URL" }}
 introspection_url = {{ getenv "INTROSPECTION_URL" }}
 introspection_mode = {{ getenv "INTROSPECTION_MODE" "post" }}
 #force_introspection = yes
 username_attribute = email
 tls_ca_cert_file = /etc/ssl/certs/ca-certificates.crt
-
+use_grant_password = no
+pass_attrs = pass=%{oauth2:access_token}