diff --git a/dist/d3-bootloader.js b/dist/d3-bootloader.js
index da15205..573a61f 100644
--- a/dist/d3-bootloader.js
+++ b/dist/d3-bootloader.js
@@ -4037,39 +4037,41 @@ var SystemJS = unwrapExports(system_src);
 
 var defaultMap = {
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-  'd3': 'https://d3js.org/d3.v4.js',
-  'd3-array': 'https://d3js.org/d3.v4.js',
-  'd3-axis': 'https://d3js.org/d3.v4.js',
-  'd3-brush': 'https://d3js.org/d3.v4.js',
-  'd3-chord': 'https://d3js.org/d3.v4.js',
-  'd3-collection': 'https://d3js.org/d3.v4.js',
-  'd3-color': 'https://d3js.org/d3.v4.js',
-  'd3-dispatch': 'https://d3js.org/d3.v4.js',
-  'd3-drag': 'https://d3js.org/d3.v4.js',
-  'd3-dsv': 'https://d3js.org/d3.v4.js',
-  'd3-ease': 'https://d3js.org/d3.v4.js',
-  'd3-force': 'https://d3js.org/d3.v4.js',
-  'd3-format': 'https://d3js.org/d3.v4.js',
-  'd3-geo': 'https://d3js.org/d3.v4.js',
-  'd3-hierarchy': 'https://d3js.org/d3.v4.js',
-  'd3-interpolate': 'https://d3js.org/d3.v4.js',
-  'd3-path': 'https://d3js.org/d3.v4.js',
-  'd3-polygon': 'https://d3js.org/d3.v4.js',
-  'd3-quadtree': 'https://d3js.org/d3.v4.js',
+  'd3': 'https://unpkg.com/d3@5.4.0/index.js',
+  'd3-array': 'https://unpkg.com/d3-array/index.js',
+  'd3-axis': 'https://unpkg.com/d3-axis/index.js',
+  'd3-brush': 'https://unpkg.com/d3-brush/index.js',
+  'd3-chord': 'https://unpkg.com/d3-chord/index.js',
+  'd3-collection': 'https://unpkg.com/d3-collection/index.js',
+  'd3-contour': 'https://unpkg.com/d3-contour/index.js',
+  'd3-scale-chromatic': 'https://unpkg.com/d3-scale-chromatic/index.js',
+  'd3-color': 'https://unpkg.com/d3-color/index.js',
+  'd3-dispatch': 'https://unpkg.com/d3-dispatch/index.js',
+  'd3-drag': 'https://unpkg.com/d3-drag/index.js',
+  'd3-dsv': 'https://unpkg.com/d3-dsv/index.js',
+  'd3-ease': 'https://unpkg.com/d3-ease/index.js',
+  'd3-force': 'https://unpkg.com/d3-force/index.js',
+  'd3-format': 'https://unpkg.com/d3-format/index.js',
+  'd3-geo': 'https://unpkg.com/d3-geo/index.js',
+  'd3-hierarchy': 'https://unpkg.com/d3-hierarchy/index.js',
+  'd3-interpolate': 'https://unpkg.com/d3-interpolate/index.js',
+  'd3-path': 'https://unpkg.com/d3-path/index.js',
+  'd3-polygon': 'https://unpkg.com/d3-polygon/index.js',
+  'd3-quadtree': 'https://unpkg.com/d3-quadtree/index.js',
   'd3-quarterly': 'https://rawgit.com/ft-interactive/d3-quarterly/master/index.js',
-  'd3-queue': 'https://d3js.org/d3.v4.js',
-  'd3-random': 'https://d3js.org/d3.v4.js',
-  'd3-request': 'https://d3js.org/d3.v4.js',
-  'd3-scale': 'https://d3js.org/d3.v4.js',
+  'd3-queue': 'https://unpkg.com/d3-queue/index.js',
+  'd3-random': 'https://unpkg.com/d3-random/index.js',
+  'd3-fetch': 'https://unpkg.com/d3-fetch/index.js',
+  'd3-scale': 'https://unpkg.com/d3-scale/index.js',
   'd3-selection-multi': 'https://unpkg.com/d3-selection-multi@1.0.1',
-  'd3-selection': 'https://d3js.org/d3.v4.js',
-  'd3-shape': 'https://d3js.org/d3.v4.js',
-  'd3-time-format': 'https://d3js.org/d3.v4.js',
-  'd3-time': 'https://d3js.org/d3.v4.js',
-  'd3-timer': 'https://d3js.org/d3.v4.js',
-  'd3-transition': 'https://d3js.org/d3.v4.js',
-  'd3-voronoi': 'https://d3js.org/d3.v4.js',
-  'd3-zoom': 'https://d3js.org/d3.v4.js',
+  'd3-selection': 'https://unpkg.com/d3-selection/index.js',
+  'd3-shape': 'https://unpkg.com/d3-shape/index.js',
+  'd3-time-format': 'https://unpkg.com/d3-time-format/index.js',
+  'd3-time': 'https://unpkg.com/d3-time/index.js',
+  'd3-timer': 'https://unpkg.com/d3-timer/index.js',
+  'd3-transition': 'https://unpkg.com/d3-transition/index.js',
+  'd3-voronoi': 'https://unpkg.com/d3-voronoi/index.js',
+  'd3-zoom': 'https://unpkg.com/d3-zoom/index.js',
   'g-axis': 'https://rawgit.com/ft-interactive/g-axis/master/build/g-axis.js',
   'g-chartcolour': 'https://rawgit.com/ft-interactive/g-chartcolour/master/build/g-chartcolour.js',
   'g-chartframe': 'https://rawgit.com/ft-interactive/g-chartframe/master/build/g-chartframe.js',
diff --git a/dist/d3-bootloader.min.js b/dist/d3-bootloader.min.js
index fd337ec..fd9826e 100644
--- a/dist/d3-bootloader.min.js
+++ b/dist/d3-bootloader.min.js
@@ -1 +1 @@
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diff --git a/index.js b/index.js
index d866258..b06c73b 100644
--- a/index.js
+++ b/index.js
@@ -13,39 +13,41 @@ import SystemJS from 'systemjs';
 
 var defaultMap = {
   '@financial-times/load-data': 'https://unpkg.com/@financial-times/load-data@^1.0.2/dist/loadData.dist.min.js',
-  'd3': 'https://d3js.org/d3.v4.js',
-  'd3-array': 'https://d3js.org/d3.v4.js',
-  'd3-axis': 'https://d3js.org/d3.v4.js',
-  'd3-brush': 'https://d3js.org/d3.v4.js',
-  'd3-chord': 'https://d3js.org/d3.v4.js',
-  'd3-collection': 'https://d3js.org/d3.v4.js',
-  'd3-color': 'https://d3js.org/d3.v4.js',
-  'd3-dispatch': 'https://d3js.org/d3.v4.js',
-  'd3-drag': 'https://d3js.org/d3.v4.js',
-  'd3-dsv': 'https://d3js.org/d3.v4.js',
-  'd3-ease': 'https://d3js.org/d3.v4.js',
-  'd3-force': 'https://d3js.org/d3.v4.js',
-  'd3-format': 'https://d3js.org/d3.v4.js',
-  'd3-geo': 'https://d3js.org/d3.v4.js',
-  'd3-hierarchy': 'https://d3js.org/d3.v4.js',
-  'd3-interpolate': 'https://d3js.org/d3.v4.js',
-  'd3-path': 'https://d3js.org/d3.v4.js',
-  'd3-polygon': 'https://d3js.org/d3.v4.js',
-  'd3-quadtree': 'https://d3js.org/d3.v4.js',
+  'd3': 'https://unpkg.com/d3@5.4.0/index.js',
+  'd3-array': 'https://unpkg.com/d3-array/index.js',
+  'd3-axis': 'https://unpkg.com/d3-axis/index.js',
+  'd3-brush': 'https://unpkg.com/d3-brush/index.js',
+  'd3-chord': 'https://unpkg.com/d3-chord/index.js',
+  'd3-collection': 'https://unpkg.com/d3-collection/index.js',
+  'd3-contour': 'https://unpkg.com/d3-contour/index.js',
+  'd3-scale-chromatic': 'https://unpkg.com/d3-scale-chromatic/index.js',
+  'd3-color': 'https://unpkg.com/d3-color/index.js',
+  'd3-dispatch': 'https://unpkg.com/d3-dispatch/index.js',
+  'd3-drag': 'https://unpkg.com/d3-drag/index.js',
+  'd3-dsv': 'https://unpkg.com/d3-dsv/index.js',
+  'd3-ease': 'https://unpkg.com/d3-ease/index.js',
+  'd3-force': 'https://unpkg.com/d3-force/index.js',
+  'd3-format': 'https://unpkg.com/d3-format/index.js',
+  'd3-geo': 'https://unpkg.com/d3-geo/index.js',
+  'd3-hierarchy': 'https://unpkg.com/d3-hierarchy/index.js',
+  'd3-interpolate': 'https://unpkg.com/d3-interpolate/index.js',
+  'd3-path': 'https://unpkg.com/d3-path/index.js',
+  'd3-polygon': 'https://unpkg.com/d3-polygon/index.js',
+  'd3-quadtree': 'https://unpkg.com/d3-quadtree/index.js',
   'd3-quarterly': 'https://rawgit.com/ft-interactive/d3-quarterly/master/index.js',
-  'd3-queue': 'https://d3js.org/d3.v4.js',
-  'd3-random': 'https://d3js.org/d3.v4.js',
-  'd3-request': 'https://d3js.org/d3.v4.js',
-  'd3-scale': 'https://d3js.org/d3.v4.js',
+  'd3-queue': 'https://unpkg.com/d3-queue/index.js',
+  'd3-random': 'https://unpkg.com/d3-random/index.js',
+  'd3-fetch': 'https://unpkg.com/d3-fetch/index.js',
+  'd3-scale': 'https://unpkg.com/d3-scale/index.js',
   'd3-selection-multi': 'https://unpkg.com/d3-selection-multi@1.0.1',
-  'd3-selection': 'https://d3js.org/d3.v4.js',
-  'd3-shape': 'https://d3js.org/d3.v4.js',
-  'd3-time-format': 'https://d3js.org/d3.v4.js',
-  'd3-time': 'https://d3js.org/d3.v4.js',
-  'd3-timer': 'https://d3js.org/d3.v4.js',
-  'd3-transition': 'https://d3js.org/d3.v4.js',
-  'd3-voronoi': 'https://d3js.org/d3.v4.js',
-  'd3-zoom': 'https://d3js.org/d3.v4.js',
+  'd3-selection': 'https://unpkg.com/d3-selection/index.js',
+  'd3-shape': 'https://unpkg.com/d3-shape/index.js',
+  'd3-time-format': 'https://unpkg.com/d3-time-format/index.js',
+  'd3-time': 'https://unpkg.com/d3-time/index.js',
+  'd3-timer': 'https://unpkg.com/d3-timer/index.js',
+  'd3-transition': 'https://unpkg.com/d3-transition/index.js',
+  'd3-voronoi': 'https://unpkg.com/d3-voronoi/index.js',
+  'd3-zoom': 'https://unpkg.com/d3-zoom/index.js',
   'g-axis': 'https://rawgit.com/ft-interactive/g-axis/master/build/g-axis.js',
   'g-chartcolour': 'https://rawgit.com/ft-interactive/g-chartcolour/master/build/g-chartcolour.js',
   'g-chartframe': 'https://rawgit.com/ft-interactive/g-chartframe/master/build/g-chartframe.js',