diff --git a/logger/types.go b/logger/types.go
index 86408620e..d98f0874a 100644
--- a/logger/types.go
+++ b/logger/types.go
@@ -66,11 +66,11 @@ func (l *EthMinerNewBlock) EventName() string {
 }
 
 type EthChainReceivedNewBlock struct {
-	BlockHash     string `json:"block_hash"`
-	BlockNumber   int    `json:"block_number"`
-	ChainHeadHash string `json:"chain_head_hash"`
-	BlockPrevHash string `json:"block_prev_hash"`
-	RemoteId      int    `json:"remote_id"`
+	BlockHash     string   `json:"block_hash"`
+	BlockNumber   *big.Int `json:"block_number"`
+	ChainHeadHash string   `json:"chain_head_hash"`
+	BlockPrevHash string   `json:"block_prev_hash"`
+	RemoteId      string   `json:"remote_id"`
 	LogEvent
 }
 
@@ -79,10 +79,10 @@ func (l *EthChainReceivedNewBlock) EventName() string {
 }
 
 type EthChainNewHead struct {
-	BlockHash     string `json:"block_hash"`
-	BlockNumber   int    `json:"block_number"`
-	ChainHeadHash string `json:"chain_head_hash"`
-	BlockPrevHash string `json:"block_prev_hash"`
+	BlockHash     string   `json:"block_hash"`
+	BlockNumber   *big.Int `json:"block_number"`
+	ChainHeadHash string   `json:"chain_head_hash"`
+	BlockPrevHash string   `json:"block_prev_hash"`
 	LogEvent
 }