diff --git a/check-health.sh b/check-health.sh
index 002220b7..bd77bce5 100755
--- a/check-health.sh
+++ b/check-health.sh
@@ -380,6 +380,14 @@ if [ $? -eq 0 ]; then
 		    echo "unverified ($http_status_code2)"
 		    exit 1
                 fi 
+            else
+                rm "$response_file2"
+                if [ $attempt -lt $MAX_RETRIES ]; then
+                    attempt=$((attempt + 1))
+                    continue
+                fi
+                echo "unverified (reference unreachable)"
+                exit 1
             fi
             done
             
diff --git a/reference-rpc-endpoint.json b/reference-rpc-endpoint.json
index c6911c2d..af7f9713 100644
--- a/reference-rpc-endpoint.json
+++ b/reference-rpc-endpoint.json
@@ -3394,6 +3394,7 @@
     "lagging_lag": 20,
     "syncing_lag": 40,
     "urls": [
+      "https://rpc.mainnet.chain.robinhood.com",
       "https://robinhood.drpc.org"
     ]
   },