diff --git a/.gitignore b/.gitignore
index 8fe65ec..5a93ab0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 .idea
 noble-cctp-relayer
+.ignore
\ No newline at end of file
diff --git a/cmd/noble/listener.go b/cmd/noble/listener.go
index a8284fb..7f11ee6 100644
--- a/cmd/noble/listener.go
+++ b/cmd/noble/listener.go
@@ -1,32 +1,37 @@
 package noble
 
 import (
-	"cosmossdk.io/log"
 	"encoding/json"
 	"fmt"
-	"github.com/strangelove-ventures/noble-cctp-relayer/config"
-	"github.com/strangelove-ventures/noble-cctp-relayer/types"
 	"io"
 	"net/http"
 	"strconv"
 	"sync"
 	"time"
+
+	"cosmossdk.io/log"
+	"github.com/strangelove-ventures/noble-cctp-relayer/config"
+	"github.com/strangelove-ventures/noble-cctp-relayer/types"
 )
 
 func StartListener(cfg config.Config, logger log.Logger, processingQueue chan *types.MessageState) {
 	// set up client
 
-	logger.Info(fmt.Sprintf("Starting Noble listener at block %d", cfg.Networks.Source.Noble.StartBlock))
+	logger.Info(fmt.Sprintf("Starting Noble listener at block %d looking back %d blocks",
+		cfg.Networks.Source.Noble.StartBlock,
+		cfg.Networks.Source.Noble.LookbackPeriod))
 
 	var wg sync.WaitGroup
 	wg.Add(1)
 
 	// enqueue block heights
 	currentBlock := cfg.Networks.Source.Noble.StartBlock
+	lookback := cfg.Networks.Source.Noble.LookbackPeriod
 	chainTip := GetNobleChainTip(cfg)
 	blockQueue := make(chan uint64, 1000000)
 
 	// history
+	currentBlock = currentBlock - lookback
 	for currentBlock <= chainTip {
 		blockQueue <- currentBlock
 		currentBlock++
diff --git a/config/config.go b/config/config.go
index e21c0aa..b0c29b6 100644
--- a/config/config.go
+++ b/config/config.go
@@ -23,6 +23,7 @@ type Config struct {
 				RPC              string `yaml:"rpc"`
 				RequestQueueSize uint32 `yaml:"request-queue-size"`
 				StartBlock       uint64 `yaml:"start-block"`
+				LookbackPeriod   uint64 `yaml:"lookback-period"`
 				Workers          uint32 `yaml:"workers"`
 				Enabled          bool   `yaml:"enabled"`
 			} `yaml:"noble"`
diff --git a/go.mod b/go.mod
index 1fbc761..37b03a5 100644
--- a/go.mod
+++ b/go.mod
@@ -18,6 +18,7 @@ require (
 )
 
 require (
+	cosmossdk.io/math v1.0.0-beta.4
 	github.com/circlefin/noble-cctp v0.0.0-20230911222715-829029fbba29
 	github.com/cometbft/cometbft v0.38.0
 	github.com/gin-gonic/gin v1.8.1
@@ -30,7 +31,6 @@ require (
 	cosmossdk.io/api v0.3.1 // indirect
 	cosmossdk.io/core v0.5.1 // indirect
 	cosmossdk.io/depinject v1.0.0-alpha.4 // indirect
-	cosmossdk.io/math v1.1.2 // indirect
 	filippo.io/edwards25519 v1.0.0 // indirect
 	github.com/4meepo/tagalign v1.3.2 // indirect
 	github.com/99designs/go-keychain v0.0.0-20191008050251-8e49817e8af4 // indirect
diff --git a/go.sum b/go.sum
index d686b6f..b645a79 100644
--- a/go.sum
+++ b/go.sum
@@ -47,8 +47,8 @@ cosmossdk.io/depinject v1.0.0-alpha.4 h1:PLNp8ZYAMPTUKyG9IK2hsbciDWqna2z1Wsl98ok
 cosmossdk.io/depinject v1.0.0-alpha.4/go.mod h1:HeDk7IkR5ckZ3lMGs/o91AVUc7E596vMaOmslGFM3yU=
 cosmossdk.io/log v1.2.1 h1:Xc1GgTCicniwmMiKwDxUjO4eLhPxoVdI9vtMW8Ti/uk=
 cosmossdk.io/log v1.2.1/go.mod h1:GNSCc/6+DhFIj1aLn/j7Id7PaO8DzNylUZoOYBL9+I4=
-cosmossdk.io/math v1.1.2 h1:ORZetZCTyWkI5GlZ6CZS28fMHi83ZYf+A2vVnHNzZBM=
-cosmossdk.io/math v1.1.2/go.mod h1:l2Gnda87F0su8a/7FEKJfFdJrM0JZRXQaohlgJeyQh0=
+cosmossdk.io/math v1.0.0-beta.4 h1:JtKedVLGzA0vv84xjYmZ75RKG35Kf2WwcFu8IjRkIIw=
+cosmossdk.io/math v1.0.0-beta.4/go.mod h1:An0MllWJY6PxibUpnwGk8jOm+a/qIxlKmL5Zyp9NnaM=
 dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
 filippo.io/edwards25519 v1.0.0 h1:0wAIcmJUqRdI8IJ/3eGi5/HwXZWPujYXXlkrQogz0Ek=
 filippo.io/edwards25519 v1.0.0/go.mod h1:N1IkdkCkiLB6tki+MYJoSx2JTY9NUlxZE7eHn5EwJns=