diff --git a/configs/coins/bitcoin.json b/configs/coins/bitcoin.json
index 4a9cf0c1..57fce7e1 100644
--- a/configs/coins/bitcoin.json
+++ b/configs/coins/bitcoin.json
@@ -53,7 +53,7 @@
     "internal_binding_template": ":{{.Ports.BlockbookInternal}}",
     "public_binding_template": ":{{.Ports.BlockbookPublic}}",
     "explorer_url": "",
-    "additional_params": "-dbcache=1073741824 -enablesubnewtx",
+    "additional_params": "-dbcache=1073741824 -enablesubnewtx -extendedindex",
     "block_chain": {
       "parse": true,
       "mempool_workers": 8,
diff --git a/configs/coins/bitcoin_testnet.json b/configs/coins/bitcoin_testnet.json
index ca1bad51..4bfd85a5 100644
--- a/configs/coins/bitcoin_testnet.json
+++ b/configs/coins/bitcoin_testnet.json
@@ -53,7 +53,7 @@
     "internal_binding_template": ":{{.Ports.BlockbookInternal}}",
     "public_binding_template": ":{{.Ports.BlockbookPublic}}",
     "explorer_url": "",
-    "additional_params": "-enablesubnewtx",
+    "additional_params": "-enablesubnewtx -extendedindex",
     "block_chain": {
       "parse": true,
       "mempool_workers": 8,