diff --git a/regtest/reorg.js b/regtest/reorg.js
index 7d7ac61..2ec9f13 100644
--- a/regtest/reorg.js
+++ b/regtest/reorg.js
@@ -272,6 +272,9 @@ var bitcore = {
         },
         'insight-api': {
           'routePrefix': 'api'
+        },
+        'block': {
+          'readAheadBlockCount': 1
         }
       }
     }