diff --git a/bar.go b/bar.go
index 8ebe793..6521ffc 100644
--- a/bar.go
+++ b/bar.go
@@ -42,7 +42,7 @@
 // Refil is a struct for b.IncrWithReFill
 type refill struct {
 	char rune
-	till int
+	till int64
 }
 
 type (
@@ -55,8 +55,8 @@
 		width          int
 		format         barFmtRunes
 		etaAlpha       float64
-		total          int
-		current        int
+		total          int64
+		current        int64
 		trimLeftSpace  bool
 		trimRightSpace bool
 		completed      bool
@@ -72,7 +72,7 @@
 	}
 )
 
-func newBar(total int, wg *sync.WaitGroup, cancel <-chan struct{}, options ...BarOption) *Bar {
+func newBar(total int64, wg *sync.WaitGroup, cancel <-chan struct{}, options ...BarOption) *Bar {
 	s := state{
 		total:    total,
 		etaAlpha: etaAlpha,
@@ -137,7 +137,7 @@
 			s.startTime = time.Now()
 			s.blockStartTime = s.startTime
 		}
-		sum := s.current + n
+		sum := s.current + int64(n)
 		s.timeElapsed = time.Since(s.startTime)
 		s.updateTimePerItemEstimate(n)
 		if s.total > 0 && sum >= s.total {
@@ -155,7 +155,7 @@
 
 // ResumeFill fills bar with different r rune,
 // from 0 to till amount of progress.
-func (b *Bar) ResumeFill(r rune, till int) {
+func (b *Bar) ResumeFill(r rune, till int64) {
 	if till < 1 {
 		return
 	}
@@ -370,7 +370,7 @@
 	return buf
 }
 
-func fillBar(total, current, width int, fmtBytes barFmtBytes, rf *refill) []byte {
+func fillBar(total, current int64, width int, fmtBytes barFmtBytes, rf *refill) []byte {
 	if width < 2 || total <= 0 {
 		return []byte{}
 	}
diff --git a/decor/decorators.go b/decor/decorators.go
index 4e96b7a..c520946 100644
--- a/decor/decorators.go
+++ b/decor/decorators.go
@@ -30,8 +30,8 @@
 	ID                  int
 	Completed           bool
 	Aborted             bool
-	Total               int
-	Current             int
+	Total               int64
+	Current             int64
 	StartTime           time.Time
 	TimeElapsed         time.Duration
 	TimePerItemEstimate time.Duration
@@ -146,7 +146,7 @@
 	}
 }
 
-func CalcPercentage(total, current, width int) int {
+func CalcPercentage(total, current int64, width int) int {
 	if total == 0 || current > total {
 		return 0
 	}
diff --git a/decor/format.go b/decor/format.go
index 63de955..1a62a54 100644
--- a/decor/format.go
+++ b/decor/format.go
@@ -27,12 +27,12 @@
 
 type Units uint
 
-func Format(i int) *formatter {
+func Format(i int64) *formatter {
 	return &formatter{n: i}
 }
 
 type formatter struct {
-	n     int
+	n     int64
 	unit  Units
 	width int
 }
@@ -58,7 +58,7 @@
 	}
 }
 
-func formatKiB(i int) (result string) {
+func formatKiB(i int64) (result string) {
 	switch {
 	case i >= TiB:
 		result = fmt.Sprintf("%.1fTiB", float64(i)/TiB)
@@ -74,7 +74,7 @@
 	return
 }
 
-func formatKB(i int) (result string) {
+func formatKB(i int64) (result string) {
 	switch {
 	case i >= TB:
 		result = fmt.Sprintf("%.1fTB", float64(i)/TB)
diff --git a/example/prependETA/main.go b/example/prependETA/main.go
index c12868d..d91b4c2 100644
--- a/example/prependETA/main.go
+++ b/example/prependETA/main.go
@@ -28,7 +28,7 @@
 		if i != 1 {
 			name = fmt.Sprintf("Bar#%d:", i)
 		}
-		b := p.AddBar(total,
+		b := p.AddBar(int64(total),
 			mpb.PrependDecorators(
 				decor.Name(name, 0, decor.DwidthSync|decor.DidentRight),
 				decor.ETA(4, decor.DSyncSpace),
diff --git a/progress.go b/progress.go
index 9c40923..0f1cbc1 100644
--- a/progress.go
+++ b/progress.go
@@ -83,7 +83,7 @@
 }
 
 // AddBar creates a new progress bar and adds to the container.
-func (p *Progress) AddBar(total int, options ...BarOption) *Bar {
+func (p *Progress) AddBar(total int64, options ...BarOption) *Bar {
 	result := make(chan *Bar, 1)
 	op := func(c *pConf) {
 		options = append(options, barWidth(c.width), barFormat(c.format))