diff --git a/go.mod b/go.mod
index 5b0cdb1fc4f9..11af2c4feefa 100644
--- a/go.mod
+++ b/go.mod
@@ -72,7 +72,7 @@ require (
 	github.com/aws/aws-sdk-go v1.40.45 // indirect
 	github.com/beorn7/perks v1.0.1 // indirect
 	github.com/bgentry/go-netrc v0.0.0-20140422174119-9fd32a8b3d3d // indirect
-	github.com/celestiaorg/nmt v0.22.1 // indirect
+	github.com/celestiaorg/nmt v0.22.2 // indirect
 	github.com/cenkalti/backoff/v4 v4.1.3 // indirect
 	github.com/cespare/xxhash v1.1.0 // indirect
 	github.com/cespare/xxhash/v2 v2.3.0 // indirect
@@ -184,8 +184,7 @@ replace (
 	// replace broken goleveldb.
 	github.com/syndtr/goleveldb => github.com/syndtr/goleveldb v1.0.1-0.20210819022825-2ae1ddf74ef7
 	// use cometbft
-	github.com/tendermint/tendermint => github.com/celestiaorg/celestia-core v1.42.0-tm-v0.34.35
-)
+	github.com/tendermint/tendermint => // TODO use version after core is released
 
 retract (
 	// revert fix https://github.com/cosmos/cosmos-sdk/pull/16331
diff --git a/go.sum b/go.sum
index 412cdcabfb69..01f79c72c1ff 100644
--- a/go.sum
+++ b/go.sum
@@ -147,6 +147,7 @@ github.com/celestiaorg/celestia-core v1.42.0-tm-v0.34.35 h1:bWy5XOgeuuSLe0Lc/htL
 github.com/celestiaorg/celestia-core v1.42.0-tm-v0.34.35/go.mod h1:/fK0n3ps09t5uErBQe1QZbrE81L81MNUzWpFyWQLDT0=
 github.com/celestiaorg/nmt v0.22.1 h1:t7fqoP5MJ8mBns5DB2XjfcPxQpS3CKMkY+v+BEkDxYc=
 github.com/celestiaorg/nmt v0.22.1/go.mod h1:ia/EpCk0enD5yO5frcxoNoFToz2Ghtk2i+blmCRjIY8=
+github.com/celestiaorg/nmt v0.22.2/go.mod h1:/7huDiSRL/d2EGhoiKctgSzmLOJoWG8yEfbFtY1+Mow=
 github.com/cenkalti/backoff v2.2.1+incompatible h1:tNowT99t7UNflLxfYYSlKYsBpXdEet03Pg2g16Swow4=
 github.com/cenkalti/backoff v2.2.1+incompatible/go.mod h1:90ReRw6GdpyfrHakVjL/QHaoyV4aDUVVkXQJJJ3NXXM=
 github.com/cenkalti/backoff/v4 v4.1.1/go.mod h1:scbssz8iZGpm3xbr14ovlUdkxfGXNInqkPWOWmG2CLw=
diff --git a/server/grpc/server.go b/server/grpc/server.go
index 78a8e1955af5..8a7666b3a077 100644
--- a/server/grpc/server.go
+++ b/server/grpc/server.go
@@ -1,7 +1,9 @@
 package grpc
 
 import (
+	"context"
 	"fmt"
+	coregrpc "github.com/tendermint/tendermint/rpc/grpc"
 	"net"
 	"time"
 
@@ -34,6 +36,10 @@ func StartGRPCServer(clientCtx client.Context, app types.Application, cfg config
 		grpc.MaxRecvMsgSize(maxRecvMsgSize),
 	)
 
+	api := coregrpc.NewBlockAPI()
+	go api.StartNewBlockEventListener(context.Background())
+	coregrpc.RegisterBlockAPIServer(grpcSrv, api)
+
 	app.RegisterGRPCServer(grpcSrv)
 
 	// Reflection allows consumers to build dynamic clients that can write to any