diff --git a/gantt-chart-d3.js b/gantt-chart-d3.js
index c79dad3..66a75ce 100644
--- a/gantt-chart-d3.js
+++ b/gantt-chart-d3.js
@@ -14,8 +14,8 @@ d3.gantt = function() {
 	left : 150
     };
     var selector = 'body';
-    var timeDomainStart = d3.time.day.offset(new Date(),-3);
-    var timeDomainEnd = d3.time.hour.offset(new Date(),+3);
+    var timeDomainStart = d3.timeDay.offset(new Date(),-3);
+    var timeDomainEnd = d3.timeHour.offset(new Date(),+3);
     var timeDomainMode = FIT_TIME_DOMAIN_MODE;// fixed or fit
     var taskTypes = [];
     var taskStatus = [];
@@ -32,20 +32,21 @@ d3.gantt = function() {
 	return "translate(" + x(d.startDate) + "," + y(d.taskName) + ")";
     };
 
-    var x = d3.time.scale().domain([ timeDomainStart, timeDomainEnd ]).range([ 0, width ]).clamp(true);
+    var x = d3.scaleTime().domain([ timeDomainStart, timeDomainEnd ]).range([ 0, width ]).clamp(true);
 
-    var y = d3.scale.ordinal().domain(taskTypes).rangeRoundBands([ 0, height - margin.top - margin.bottom ], .1);
+    var y = d3.scaleBand().domain(taskTypes).range([ 0, height - margin.top - margin.bottom ]).padding(.1);
     
-    var xAxis = d3.svg.axis().scale(x).orient("bottom").tickFormat(d3.time.format(tickFormat)).tickSubdivide(true)
+    var xAxis = d3.axisBottom(x).tickFormat(d3.timeFormat(tickFormat))
+    //.tickSubdivide(true)
 	    .tickSize(8).tickPadding(8);
 
-    var yAxis = d3.svg.axis().scale(y).orient("left").tickSize(0);
+    var yAxis = d3.axisLeft(y).tickSize(0);
 
     var initTimeDomain = function(tasks) {
 	if (timeDomainMode === FIT_TIME_DOMAIN_MODE) {
 	    if (tasks === undefined || tasks.length < 1) {
-		timeDomainStart = d3.time.day.offset(new Date(), -3);
-		timeDomainEnd = d3.time.hour.offset(new Date(), +3);
+		timeDomainStart = d3.timeDay.offset(new Date(), -3);
+		timeDomainEnd = d3.timeHour.offset(new Date(), +3);
 		return;
 	    }
 	    tasks.sort(function(a, b) {
@@ -60,12 +61,13 @@ d3.gantt = function() {
     };
 
     var initAxis = function() {
-	x = d3.time.scale().domain([ timeDomainStart, timeDomainEnd ]).range([ 0, width ]).clamp(true);
-	y = d3.scale.ordinal().domain(taskTypes).rangeRoundBands([ 0, height - margin.top - margin.bottom ], .1);
-	xAxis = d3.svg.axis().scale(x).orient("bottom").tickFormat(d3.time.format(tickFormat)).tickSubdivide(true)
+	x = d3.scaleTime().domain([ timeDomainStart, timeDomainEnd ]).range([ 0, width ]).clamp(true);
+	y = d3.scaleBand().domain(taskTypes).range([ 0, height - margin.top - margin.bottom ]).padding(.1);
+	xAxis = d3.axisBottom(x).tickFormat(d3.timeFormat(tickFormat))
+        //.tickSubdivide(true)
 		.tickSize(8).tickPadding(8);
 
-	yAxis = d3.svg.axis().scale(y).orient("left").tickSize(0);
+	yAxis = d3.axisLeft(y).tickSize(0);
     };
     
     function gantt(tasks) {
@@ -95,7 +97,7 @@ d3.gantt = function() {
 	     }) 
 	 .attr("y", 0)
 	 .attr("transform", rectTransform)
-	 .attr("height", function(d) { return y.rangeBand(); })
+	 .attr("height", function(d) { return y.bandwidth(); })
 	 .attr("width", function(d) { 
 	     return Math.max(1,(x(d.endDate) - x(d.startDate))); 
 	     });
@@ -134,14 +136,14 @@ d3.gantt = function() {
 	 .transition()
 	 .attr("y", 0)
 	 .attr("transform", rectTransform)
-	 .attr("height", function(d) { return y.rangeBand(); })
+	 .attr("height", function(d) { return y.bandwidth(); })
 	 .attr("width", function(d) { 
 	     return Math.max(1,(x(d.endDate) - x(d.startDate))); 
 	     });
 
         rect.transition()
           .attr("transform", rectTransform)
-	 .attr("height", function(d) { return y.rangeBand(); })
+	 .attr("height", function(d) { return y.bandwidth(); })
 	 .attr("width", function(d) { 
 	     return Math.max(1,(x(d.endDate) - x(d.startDate))); 
 	     });