diff --git a/_examples/cancel/main.go b/_examples/cancel/main.go
index 9da8ed3..23d91ed 100644
--- a/_examples/cancel/main.go
+++ b/_examples/cancel/main.go
@@ -7,8 +7,8 @@
 	"sync"
 	"time"
 
-	"github.com/vbauerster/mpb"
-	"github.com/vbauerster/mpb/decor"
+	"github.com/vbauerster/mpb/v4"
+	"github.com/vbauerster/mpb/v4/decor"
 )
 
 func init() {
diff --git a/bar.go b/bar.go
index 856a3c5..0cf5e5a 100644
--- a/bar.go
+++ b/bar.go
@@ -11,7 +11,7 @@
 	"time"
 	"unicode/utf8"
 
-	"github.com/vbauerster/mpb/decor"
+	"github.com/vbauerster/mpb/v4/decor"
 )
 
 // Bar represents a progress Bar
diff --git a/bar_filler.go b/bar_filler.go
index f58e187..91c2001 100644
--- a/bar_filler.go
+++ b/bar_filler.go
@@ -4,8 +4,8 @@
 	"io"
 	"strings"
 
-	"github.com/vbauerster/mpb/decor"
-	"github.com/vbauerster/mpb/internal"
+	"github.com/vbauerster/mpb/v4/decor"
+	"github.com/vbauerster/mpb/v4/internal"
 )
 
 const (
diff --git a/bar_option.go b/bar_option.go
index a14b286..71dd091 100644
--- a/bar_option.go
+++ b/bar_option.go
@@ -4,7 +4,7 @@
 	"io"
 	"unicode/utf8"
 
-	"github.com/vbauerster/mpb/decor"
+	"github.com/vbauerster/mpb/v4/decor"
 )
 
 // BarOption is a function option which changes the default behavior of a bar.
diff --git a/bar_test.go b/bar_test.go
index 8792859..8081ab7 100644
--- a/bar_test.go
+++ b/bar_test.go
@@ -9,12 +9,12 @@
 	"time"
 	"unicode/utf8"
 
-	. "github.com/vbauerster/mpb"
-	"github.com/vbauerster/mpb/decor"
+	"github.com/vbauerster/mpb/v4"
+	"github.com/vbauerster/mpb/v4/decor"
 )
 
 func TestBarCompleted(t *testing.T) {
-	p := New(WithOutput(ioutil.Discard))
+	p := mpb.New(mpb.WithOutput(ioutil.Discard))
 	total := 80
 	bar := p.AddBar(int64(total))
 
@@ -32,10 +32,10 @@
 }
 
 func TestBarID(t *testing.T) {
-	p := New(WithOutput(ioutil.Discard))
+	p := mpb.New(mpb.WithOutput(ioutil.Discard))
 	total := 80
 	wantID := 11
-	bar := p.AddBar(int64(total), BarID(wantID))
+	bar := p.AddBar(int64(total), mpb.BarID(wantID))
 
 	go func() {
 		for i := 0; i < total; i++ {
@@ -57,13 +57,13 @@
 	var buf bytes.Buffer
 
 	width := 100
-	p := New(WithOutput(&buf), WithWidth(width))
+	p := mpb.New(mpb.WithOutput(&buf), mpb.WithWidth(width))
 
 	total := 100
 	till := 30
 	refillRune := '+'
 
-	bar := p.AddBar(int64(total), TrimSpace())
+	bar := p.AddBar(int64(total), mpb.TrimSpace())
 
 	bar.SetRefill(till, refillRune)
 	bar.IncrBy(till)
@@ -90,9 +90,9 @@
 func TestBarStyle(t *testing.T) {
 	var buf bytes.Buffer
 	customFormat := "╢▌▌░╟"
-	p := New(WithOutput(&buf))
+	p := mpb.New(mpb.WithOutput(&buf))
 	total := 80
-	bar := p.AddBar(int64(total), BarStyle(customFormat), TrimSpace())
+	bar := p.AddBar(int64(total), mpb.BarStyle(customFormat), mpb.TrimSpace())
 
 	for i := 0; i < total; i++ {
 		bar.Increment()
@@ -116,12 +116,12 @@
 
 func TestBarPanics(t *testing.T) {
 	var buf bytes.Buffer
-	p := New(WithDebugOutput(&buf), WithOutput(ioutil.Discard))
+	p := mpb.New(mpb.WithDebugOutput(&buf), mpb.WithOutput(ioutil.Discard))
 
 	wantPanic := "Upps!!!"
 	total := 100
 
-	bar := p.AddBar(int64(total), PrependDecorators(panicDecorator(wantPanic)))
+	bar := p.AddBar(int64(total), mpb.PrependDecorators(panicDecorator(wantPanic)))
 
 	go func() {
 		for i := 0; i < 100; i++ {
diff --git a/barbench_test.go b/barbench_test.go
index d5d904c..ae84322 100644
--- a/barbench_test.go
+++ b/barbench_test.go
@@ -4,7 +4,7 @@
 	"io/ioutil"
 	"testing"
 
-	"github.com/vbauerster/mpb/decor"
+	"github.com/vbauerster/mpb/v4/decor"
 )
 
 func BenchmarkIncrSingleBar(b *testing.B) {
diff --git a/cwriter/writer_posix_test.go b/cwriter/writer_posix_test.go
index e2a48a4..31e9d22 100644
--- a/cwriter/writer_posix_test.go
+++ b/cwriter/writer_posix_test.go
@@ -6,7 +6,7 @@
 	"bytes"
 	"testing"
 
-	. "github.com/vbauerster/mpb/cwriter"
+	. "github.com/vbauerster/mpb/v4/cwriter"
 )
 
 // TestWriterPosix by writing and flushing many times. The output buffer
diff --git a/decor/percentage.go b/decor/percentage.go
index 078fbcf..23938d6 100644
--- a/decor/percentage.go
+++ b/decor/percentage.go
@@ -3,7 +3,7 @@
 import (
 	"fmt"
 
-	"github.com/vbauerster/mpb/internal"
+	"github.com/vbauerster/mpb/v4/internal"
 )
 
 // Percentage returns percentage decorator.
diff --git a/decorators_test.go b/decorators_test.go
index a057197..a951389 100644
--- a/decorators_test.go
+++ b/decorators_test.go
@@ -4,8 +4,8 @@
 	"sync"
 	"testing"
 
-	. "github.com/vbauerster/mpb"
-	"github.com/vbauerster/mpb/decor"
+	. "github.com/vbauerster/mpb/v4"
+	"github.com/vbauerster/mpb/v4/decor"
 )
 
 func TestNameDecorator(t *testing.T) {
diff --git a/go.mod b/go.mod
index fe1c850..b0f62ef 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,6 @@
 require (
 	github.com/VividCortex/ewma v1.1.1
 	github.com/mattn/go-isatty v0.0.4
-	github.com/vbauerster/mpb v3.3.4+incompatible
 	golang.org/x/crypto v0.0.0-20190129170551-bf88e3f4ba72
 	golang.org/x/sys v0.0.0-20190129075346-302c3dd5f1cc // indirect
 )
diff --git a/go.sum b/go.sum
index b975fcb..4296a00 100644
--- a/go.sum
+++ b/go.sum
@@ -2,8 +2,6 @@
 github.com/VividCortex/ewma v1.1.1/go.mod h1:2Tkkvm3sRDVXaiyucHiACn4cqf7DpdyLvmxzcbUokwA=
 github.com/mattn/go-isatty v0.0.4 h1:bnP0vzxcAdeI1zdubAl5PjU6zsERjGZb7raWodagDYs=
 github.com/mattn/go-isatty v0.0.4/go.mod h1:M+lRXTBqGeGNdLjl/ufCoiOlB5xdOkqRJdNxMWT7Zi4=
-github.com/vbauerster/mpb v3.3.4+incompatible h1:DDIhnwmgTQIDZo+SWlEr5d6mJBxkOLBwCXPzunhEfJ4=
-github.com/vbauerster/mpb v3.3.4+incompatible/go.mod h1:zAHG26FUhVKETRu+MWqYXcI70POlC6N8up9p1dID7SU=
 golang.org/x/crypto v0.0.0-20190129170551-bf88e3f4ba72 h1:hOSpsWG5LMauyHIJqtLUU+44acN/ft/9cpzc1ynVDyg=
 golang.org/x/crypto v0.0.0-20190129170551-bf88e3f4ba72/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/sys v0.0.0-20190129075346-302c3dd5f1cc h1:WiYx1rIFmx8c0mXAFtv5D/mHyKe1+jmuP7PViuwqwuQ=
diff --git a/options.go b/options.go
index 44a6ee3..d1e2182 100644
--- a/options.go
+++ b/options.go
@@ -6,7 +6,7 @@
 	"sync"
 	"time"
 
-	"github.com/vbauerster/mpb/cwriter"
+	"github.com/vbauerster/mpb/v4/cwriter"
 )
 
 // ProgressOption is a function option which changes the default
diff --git a/progress.go b/progress.go
index 03fc628..494441b 100644
--- a/progress.go
+++ b/progress.go
@@ -10,7 +10,7 @@
 	"sync"
 	"time"
 
-	"github.com/vbauerster/mpb/cwriter"
+	"github.com/vbauerster/mpb/v4/cwriter"
 )
 
 const (
diff --git a/progress_test.go b/progress_test.go
index de34785..3898608 100644
--- a/progress_test.go
+++ b/progress_test.go
@@ -10,9 +10,8 @@
 	"testing"
 	"time"
 
-	"github.com/vbauerster/mpb"
-	. "github.com/vbauerster/mpb"
-	"github.com/vbauerster/mpb/cwriter"
+	"github.com/vbauerster/mpb/v4"
+	"github.com/vbauerster/mpb/v4/cwriter"
 )
 
 var (
@@ -26,7 +25,7 @@
 }
 
 func TestBarCount(t *testing.T) {
-	p := New(WithOutput(ioutil.Discard))
+	p := mpb.New(mpb.WithOutput(ioutil.Discard))
 
 	var wg sync.WaitGroup
 	wg.Add(1)
@@ -52,11 +51,11 @@
 }
 
 func TestBarAbort(t *testing.T) {
-	p := New(WithOutput(ioutil.Discard))
+	p := mpb.New(mpb.WithOutput(ioutil.Discard))
 
 	var wg sync.WaitGroup
 	wg.Add(1)
-	bars := make([]*Bar, 3)
+	bars := make([]*mpb.Bar, 3)
 	for i := 0; i < 3; i++ {
 		b := p.AddBar(100)
 		bars[i] = b
diff --git a/proxyreader_test.go b/proxyreader_test.go
index 7006674..280e54a 100644
--- a/proxyreader_test.go
+++ b/proxyreader_test.go
@@ -6,7 +6,7 @@
 	"strings"
 	"testing"
 
-	"github.com/vbauerster/mpb"
+	"github.com/vbauerster/mpb/v4"
 )
 
 const content = `Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do
diff --git a/spinner_filler.go b/spinner_filler.go
index 908c634..74fcb90 100644
--- a/spinner_filler.go
+++ b/spinner_filler.go
@@ -5,7 +5,7 @@
 	"strings"
 	"unicode/utf8"
 
-	"github.com/vbauerster/mpb/decor"
+	"github.com/vbauerster/mpb/v4/decor"
 )
 
 // SpinnerAlignment enum.