diff --git a/config/optional/core.extension.yml b/config/optional/core.extension.yml
index 22ae288..731bf6b 100644
--- a/config/optional/core.extension.yml
+++ b/config/optional/core.extension.yml
@@ -1,6 +1,7 @@
 _core:
   default_config_hash: R4IF-ClDHXxblLcG0L7MgsLvfBIMAvi_skumNFQwkDc
 module:
+  mysql: 0
   admin_toolbar: 0
   automated_cron: 0
   base_field_override_ui: 0