diff --git a/cs3_jupyter_client/cs3mixin.py b/cs3_jupyter_client/cs3mixin.py
index f8e23f5..ebeab6b 100644
--- a/cs3_jupyter_client/cs3mixin.py
+++ b/cs3_jupyter_client/cs3mixin.py
@@ -79,6 +79,7 @@ def _create_cs3_config(self) -> ConfigParser:
         cs3config.set("cs3client", "tus_enabled", str(self.tus_enabled).lower())
         cs3config.set("cs3client", "ssl_enabled", str(self.ssl_enabled).lower())
         cs3config.set("cs3client", "token_path", self.token_path)
+        cs3config.set("cs3client", "auth_client_id", self.client_id)
         cs3config.set("cs3client", "auth_login_type", self.auth_login_type)
         cs3config.set("cs3client", "authtokenvalidity", str(self.authtokenvalidity))
         cs3config.set("cs3client", "lock_not_impl", str(self.lock_not_impl).lower())