diff --git a/reth-sepolia.yml b/reth-sepolia.yml
index ee063987..a8e3761e 100644
--- a/reth-sepolia.yml
+++ b/reth-sepolia.yml
@@ -53,7 +53,8 @@ services:
         "--p2p-udp-port=52969",
         "--checkpoint-sync-url=https://beaconstate-sepolia.chainsafe.io",
         "--execution-endpoint=http://sepolia-reth:8551",
-        "--accept-terms-of-use"
+        "--accept-terms-of-use",
+        "--backfill"
       ]
     networks:
       - chains