diff --git a/bolt-db/bolt/db/default_settings.py b/bolt-db/bolt/db/default_settings.py
index df63520945..4a3a86b32d 100644
--- a/bolt-db/bolt/db/default_settings.py
+++ b/bolt-db/bolt/db/default_settings.py
@@ -8,7 +8,8 @@
         environ["DATABASE_URL"],
         # Enable persistent connections by default
         conn_max_age=int(environ.get("DATABASE_CONN_MAX_AGE", 600)),
-        conn_health_checks=environ.get("DATABASE_CONN_HEALTH_CHECKS", "true").lower() in [
+        conn_health_checks=environ.get("DATABASE_CONN_HEALTH_CHECKS", "true").lower()
+        in [
             "true",
             "1",
         ],