diff --git a/append_entries.go b/append_entries.go
index 2629bdc..2ef04be 100644
--- a/append_entries.go
+++ b/append_entries.go
@@ -4,8 +4,8 @@ import (
 	"io"
 	"io/ioutil"
 
+	"github.com/chrislusf/raft/protobuf"
 	"github.com/golang/protobuf/proto"
-	"github.com/robin1900/raft/protobuf"
 )
 
 // The request sent to a server to append entries to the log.
diff --git a/go.mod b/go.mod
index 6383094..000bf7c 100644
--- a/go.mod
+++ b/go.mod
@@ -1,4 +1,4 @@
-module github.com/robin1900/raft
+module github.com/chrislusf/raft
 
 go 1.14
 
diff --git a/grpc_transporter.go b/grpc_transporter.go
index 8d572a3..7500d4d 100644
--- a/grpc_transporter.go
+++ b/grpc_transporter.go
@@ -3,7 +3,7 @@ package raft
 import (
 	context2 "context"
 	"fmt"
-	"github.com/robin1900/raft/protobuf"
+	"github.com/chrislusf/raft/protobuf"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/keepalive"
 	"sync"
diff --git a/log.go b/log.go
index f914438..ac81877 100644
--- a/log.go
+++ b/log.go
@@ -8,7 +8,7 @@ import (
 	"os"
 	"sync"
 
-	"github.com/robin1900/raft/protobuf"
+	"github.com/chrislusf/raft/protobuf"
 )
 
 //------------------------------------------------------------------------------
diff --git a/log_entry.go b/log_entry.go
index a9b4559..690a27d 100644
--- a/log_entry.go
+++ b/log_entry.go
@@ -6,8 +6,8 @@ import (
 	"fmt"
 	"io"
 
+	"github.com/chrislusf/raft/protobuf"
 	"github.com/golang/protobuf/proto"
-	"github.com/robin1900/raft/protobuf"
 )
 
 // A log entry stores a single item in the log.
diff --git a/protobuf/seaweed_raft.proto b/protobuf/seaweed_raft.proto
index a93bc96..3abd55e 100644
--- a/protobuf/seaweed_raft.proto
+++ b/protobuf/seaweed_raft.proto
@@ -1,7 +1,7 @@
 syntax = "proto3";
 
 package protobuf;
-option go_package = "github.com/robin1900/raft/protobuf";
+option go_package = "github.com/chrislusf/raft/protobuf";
 
 message LogEntry {
     uint64 Index = 1;
diff --git a/request_vote.go b/request_vote.go
index c7ec068..a3cdb75 100644
--- a/request_vote.go
+++ b/request_vote.go
@@ -4,8 +4,8 @@ import (
 	"io"
 	"io/ioutil"
 
+	"github.com/chrislusf/raft/protobuf"
 	"github.com/golang/protobuf/proto"
-	"github.com/robin1900/raft/protobuf"
 )
 
 // The request sent to a server to vote for a candidate to become a leader.
diff --git a/server.go b/server.go
index 7fa8533..08b4786 100644
--- a/server.go
+++ b/server.go
@@ -988,12 +988,7 @@ func (s *server) processAppendEntriesRequest(req *AppendEntriesRequest) (*Append
 
 		// discover new leader when candidate
 		// save leader name when follower
-		prevLeader := s.leader
 		s.leader = req.LeaderName
-		if prevLeader != s.leader {
-			s.DispatchEvent(newEvent(LeaderChangeEventType, s.leader, prevLeader))
-		}
-
 	} else {
 		// Update term and leader.
 		s.updateCurrentTerm(req.Term, req.LeaderName)
diff --git a/snapshot.go b/snapshot.go
index 92a0e95..85d24d7 100644
--- a/snapshot.go
+++ b/snapshot.go
@@ -3,12 +3,13 @@ package raft
 import (
 	"encoding/json"
 	"fmt"
-	"github.com/golang/protobuf/proto"
-	"github.com/robin1900/raft/protobuf"
 	"hash/crc32"
 	"io"
 	"io/ioutil"
 	"os"
+
+	"github.com/chrislusf/raft/protobuf"
+	"github.com/golang/protobuf/proto"
 )
 
 // Snapshot represents an in-memory representation of the current state of the system.