diff --git a/config/packages/monolog.yaml b/config/packages/monolog.yaml
index f72d93f6..707c1fdf 100644
--- a/config/packages/monolog.yaml
+++ b/config/packages/monolog.yaml
@@ -69,6 +69,7 @@ when@demo:
                 handler: nested
                 excluded_http_codes: [404, 405]
                 buffer_size: 50 # How many messages should be saved? Prevent memory leaks
+                include_stacktraces: true
             nested:
                 type: stream
                 path: "php://stderr"