diff --git a/CHANGELOG.md b/CHANGELOG.md
index a21d96e..b40b415 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,7 +13,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 > - **Fixed**: for any bug fixes.
 > - **Security**: in case of vulnerabilities.
 
-## PENDING (NOT RELEASED 3.6)
+## [4.0.0] PENDING
+
+**Command line options have changed.**
 
 ### Added
 
diff --git a/build/snapcraft.yaml b/build/snapcraft.yaml
index 341d8e3..735c9ad 100644
--- a/build/snapcraft.yaml
+++ b/build/snapcraft.yaml
@@ -15,7 +15,7 @@ parts:
     gotop:
         source: .
         plugin: go
-        go-importpath: github.com/xxxserxxx/gotop/v3
+        go-importpath: github.com/xxxserxxx/gotop/v4
         build-packages:
         - git-core
         - gcc
diff --git a/cmd/gotop/main.go b/cmd/gotop/main.go
index 5180baf..feacd6a 100644
--- a/cmd/gotop/main.go
+++ b/cmd/gotop/main.go
@@ -19,12 +19,12 @@ import (
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 	"github.com/shibukawa/configdir"
 
-	"github.com/xxxserxxx/gotop/v3"
-	"github.com/xxxserxxx/gotop/v3/colorschemes"
-	"github.com/xxxserxxx/gotop/v3/devices"
-	"github.com/xxxserxxx/gotop/v3/layout"
-	"github.com/xxxserxxx/gotop/v3/logging"
-	w "github.com/xxxserxxx/gotop/v3/widgets"
+	"github.com/xxxserxxx/gotop/v4"
+	"github.com/xxxserxxx/gotop/v4/colorschemes"
+	"github.com/xxxserxxx/gotop/v4/devices"
+	"github.com/xxxserxxx/gotop/v4/layout"
+	"github.com/xxxserxxx/gotop/v4/logging"
+	w "github.com/xxxserxxx/gotop/v4/widgets"
 )
 
 const (
diff --git a/config.go b/config.go
index 19f7589..3619c54 100644
--- a/config.go
+++ b/config.go
@@ -12,8 +12,8 @@ import (
 	"time"
 
 	"github.com/shibukawa/configdir"
-	"github.com/xxxserxxx/gotop/v3/colorschemes"
-	"github.com/xxxserxxx/gotop/v3/widgets"
+	"github.com/xxxserxxx/gotop/v4/colorschemes"
+	"github.com/xxxserxxx/gotop/v4/widgets"
 )
 
 type Config struct {
diff --git a/config_test.go b/config_test.go
index 3f4c4b5..5699444 100644
--- a/config_test.go
+++ b/config_test.go
@@ -6,7 +6,7 @@ import (
 	"time"
 
 	"github.com/stretchr/testify/assert"
-	"github.com/xxxserxxx/gotop/v3/widgets"
+	"github.com/xxxserxxx/gotop/v4/widgets"
 )
 
 // FIXME This is totally broken since the updates
diff --git a/devices/temp_freebsd.go b/devices/temp_freebsd.go
index 1a2104b..03eb770 100644
--- a/devices/temp_freebsd.go
+++ b/devices/temp_freebsd.go
@@ -7,7 +7,7 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/xxxserxxx/gotop/v3/utils"
+	"github.com/xxxserxxx/gotop/v4/utils"
 )
 
 func init() {
diff --git a/go.mod b/go.mod
index c81ba92..d144b3b 100644
--- a/go.mod
+++ b/go.mod
@@ -1,4 +1,4 @@
-module github.com/xxxserxxx/gotop/v3
+module github.com/xxxserxxx/gotop/v4
 
 require (
 	github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6 // indirect
diff --git a/go.sum b/go.sum
index c3bef32..c4064cf 100644
--- a/go.sum
+++ b/go.sum
@@ -100,6 +100,9 @@ github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXf
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
+github.com/xxxserxxx/gotop v0.0.0-20200228201131-d16cf1c6d2b9 h1:Sn+TuKkfF+CVaJjm4oVmeADtrOaHtrWpgqVLtsMpUqg=
+github.com/xxxserxxx/gotop/v3 v3.5.1 h1:aBf++Oxg7qCZpKqYpPPnXKFOxT1KYLPtiEXRh57ywu0=
+github.com/xxxserxxx/gotop/v3 v3.5.1/go.mod h1:DGPTiAmUhqE21xvokK64BuMxW+EmnOptaxpdOlqiH6s=
 github.com/xxxserxxx/iSMC v1.0.1 h1:M9Gkwnnkl+evvnugoB5yRYrbUP+cRIVOPM+xrHZc3Hs=
 github.com/xxxserxxx/iSMC v1.0.1/go.mod h1:TGgNjU7BF2DZSuxiTft+BdzxzcujFJYqFfMCzcTl/aY=
 golang.org/x/arch v0.0.0-20181203225421-5a4828bb7045/go.mod h1:cYlCBUl1MsqxdiKgmc4uh7TxZfWSFLOGSRR090WDxt8=
diff --git a/layout/layout.go b/layout/layout.go
index 6fb7c58..bc0ff2d 100644
--- a/layout/layout.go
+++ b/layout/layout.go
@@ -5,8 +5,8 @@ import (
 	"log"
 	"sort"
 
-	"github.com/xxxserxxx/gotop/v3"
-	"github.com/xxxserxxx/gotop/v3/widgets"
+	"github.com/xxxserxxx/gotop/v4"
+	"github.com/xxxserxxx/gotop/v4/widgets"
 
 	ui "github.com/gizak/termui/v3"
 )
diff --git a/logging/logging.go b/logging/logging.go
index c79b5c8..7bc1f9e 100644
--- a/logging/logging.go
+++ b/logging/logging.go
@@ -8,7 +8,7 @@ import (
 	"path/filepath"
 	"sync"
 
-	"github.com/xxxserxxx/gotop/v3"
+	"github.com/xxxserxxx/gotop/v4"
 )
 
 const (
diff --git a/logging/logging_test.go b/logging/logging_test.go
index b56a2a6..a1ac3d4 100644
--- a/logging/logging_test.go
+++ b/logging/logging_test.go
@@ -8,7 +8,7 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/assert"
-	"github.com/xxxserxxx/gotop/v3"
+	"github.com/xxxserxxx/gotop/v4"
 )
 
 func TestLogging(t *testing.T) {
diff --git a/termui/entry.go b/termui/entry.go
index 49b3b5b..6a43c5b 100644
--- a/termui/entry.go
+++ b/termui/entry.go
@@ -7,7 +7,7 @@ import (
 
 	. "github.com/gizak/termui/v3"
 	rw "github.com/mattn/go-runewidth"
-	"github.com/xxxserxxx/gotop/v3/utils"
+	"github.com/xxxserxxx/gotop/v4/utils"
 )
 
 const (
diff --git a/termui/linegraph.go b/termui/linegraph.go
index de6ca35..fd50520 100644
--- a/termui/linegraph.go
+++ b/termui/linegraph.go
@@ -5,7 +5,7 @@ import (
 	"sort"
 
 	. "github.com/gizak/termui/v3"
-	drawille "github.com/xxxserxxx/gotop/v3/termui/drawille-go"
+	drawille "github.com/xxxserxxx/gotop/v4/termui/drawille-go"
 )
 
 // LineGraph implements a line graph of data points.
diff --git a/widgets/battery.go b/widgets/battery.go
index c283c26..4e813e7 100644
--- a/widgets/battery.go
+++ b/widgets/battery.go
@@ -10,7 +10,7 @@ import (
 	"github.com/distatus/battery"
 	"github.com/prometheus/client_golang/prometheus"
 
-	ui "github.com/xxxserxxx/gotop/v3/termui"
+	ui "github.com/xxxserxxx/gotop/v4/termui"
 )
 
 type BatteryWidget struct {
diff --git a/widgets/batterygauge.go b/widgets/batterygauge.go
index 534c1cf..a379a84 100644
--- a/widgets/batterygauge.go
+++ b/widgets/batterygauge.go
@@ -9,7 +9,7 @@ import (
 	"github.com/distatus/battery"
 	"github.com/prometheus/client_golang/prometheus"
 
-	. "github.com/xxxserxxx/gotop/v3/termui"
+	. "github.com/xxxserxxx/gotop/v4/termui"
 )
 
 type BatteryGauge struct {
diff --git a/widgets/cpu.go b/widgets/cpu.go
index 5a352ba..c48273e 100644
--- a/widgets/cpu.go
+++ b/widgets/cpu.go
@@ -7,9 +7,9 @@ import (
 	"time"
 
 	"github.com/prometheus/client_golang/prometheus"
-	"github.com/xxxserxxx/gotop/v3/devices"
+	"github.com/xxxserxxx/gotop/v4/devices"
 
-	ui "github.com/xxxserxxx/gotop/v3/termui"
+	ui "github.com/xxxserxxx/gotop/v4/termui"
 )
 
 type CpuWidget struct {
diff --git a/widgets/disk.go b/widgets/disk.go
index e2b3eb2..54f4a33 100644
--- a/widgets/disk.go
+++ b/widgets/disk.go
@@ -10,8 +10,8 @@ import (
 	"github.com/prometheus/client_golang/prometheus"
 	psDisk "github.com/shirou/gopsutil/disk"
 
-	ui "github.com/xxxserxxx/gotop/v3/termui"
-	"github.com/xxxserxxx/gotop/v3/utils"
+	ui "github.com/xxxserxxx/gotop/v4/termui"
+	"github.com/xxxserxxx/gotop/v4/utils"
 )
 
 type Partition struct {
diff --git a/widgets/mem.go b/widgets/mem.go
index 7b42c42..4bf8550 100644
--- a/widgets/mem.go
+++ b/widgets/mem.go
@@ -6,9 +6,9 @@ import (
 
 	"github.com/prometheus/client_golang/prometheus"
 
-	"github.com/xxxserxxx/gotop/v3/devices"
-	ui "github.com/xxxserxxx/gotop/v3/termui"
-	"github.com/xxxserxxx/gotop/v3/utils"
+	"github.com/xxxserxxx/gotop/v4/devices"
+	ui "github.com/xxxserxxx/gotop/v4/termui"
+	"github.com/xxxserxxx/gotop/v4/utils"
 )
 
 type MemWidget struct {
diff --git a/widgets/net.go b/widgets/net.go
index 249d0c2..f851454 100644
--- a/widgets/net.go
+++ b/widgets/net.go
@@ -9,8 +9,8 @@ import (
 	"github.com/prometheus/client_golang/prometheus"
 	psNet "github.com/shirou/gopsutil/net"
 
-	ui "github.com/xxxserxxx/gotop/v3/termui"
-	"github.com/xxxserxxx/gotop/v3/utils"
+	ui "github.com/xxxserxxx/gotop/v4/termui"
+	"github.com/xxxserxxx/gotop/v4/utils"
 )
 
 const (
diff --git a/widgets/proc.go b/widgets/proc.go
index 406a095..c691755 100644
--- a/widgets/proc.go
+++ b/widgets/proc.go
@@ -12,8 +12,8 @@ import (
 	psCPU "github.com/shirou/gopsutil/cpu"
 
 	tui "github.com/gizak/termui/v3"
-	ui "github.com/xxxserxxx/gotop/v3/termui"
-	"github.com/xxxserxxx/gotop/v3/utils"
+	ui "github.com/xxxserxxx/gotop/v4/termui"
+	"github.com/xxxserxxx/gotop/v4/utils"
 )
 
 const (
diff --git a/widgets/proc_freebsd.go b/widgets/proc_freebsd.go
index f703c03..ed7a935 100644
--- a/widgets/proc_freebsd.go
+++ b/widgets/proc_freebsd.go
@@ -8,7 +8,7 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/xxxserxxx/gotop/v3/utils"
+	"github.com/xxxserxxx/gotop/v4/utils"
 )
 
 type processList struct {
diff --git a/widgets/proc_other.go b/widgets/proc_other.go
index d2a313f..46cef72 100644
--- a/widgets/proc_other.go
+++ b/widgets/proc_other.go
@@ -9,7 +9,7 @@ import (
 	"strconv"
 	"strings"
 
-	"github.com/xxxserxxx/gotop/v3/utils"
+	"github.com/xxxserxxx/gotop/v4/utils"
 )
 
 const (
diff --git a/widgets/temp.go b/widgets/temp.go
index 2db648f..2f1f2cb 100644
--- a/widgets/temp.go
+++ b/widgets/temp.go
@@ -9,8 +9,8 @@ import (
 	ui "github.com/gizak/termui/v3"
 	"github.com/prometheus/client_golang/prometheus"
 
-	"github.com/xxxserxxx/gotop/v3/devices"
-	"github.com/xxxserxxx/gotop/v3/utils"
+	"github.com/xxxserxxx/gotop/v4/devices"
+	"github.com/xxxserxxx/gotop/v4/utils"
 )
 
 type TempScale rune