diff --git a/highcharts/highcharts-modules-boost.d.ts b/highcharts/highcharts-modules-boost.d.ts
new file mode 100644
index 0000000000..3f85bb887a
--- /dev/null
+++ b/highcharts/highcharts-modules-boost.d.ts
@@ -0,0 +1,12 @@
+// Type definitions for Highcharts 4.2.6 (boost module)
+// Project: http://www.highcharts.com/
+// Definitions by: Daniel Martin <http://github.com/inad9300>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+/// <reference path="highcharts.d.ts" />
+
+declare var HighchartsBoost: (H: HighchartsStatic) => HighchartsStatic;
+
+declare module "highcharts/modules/boost" {
+    export = HighchartsBoost;
+}
diff --git a/highcharts/highcharts-modules-offline-exporting.d.ts b/highcharts/highcharts-modules-offline-exporting.d.ts
new file mode 100644
index 0000000000..61c7c76eeb
--- /dev/null
+++ b/highcharts/highcharts-modules-offline-exporting.d.ts
@@ -0,0 +1,12 @@
+// Type definitions for Highcharts 4.2.6 (offline exporting module)
+// Project: http://www.highcharts.com/
+// Definitions by: Daniel Martin <http://github.com/inad9300>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+/// <reference path="highcharts.d.ts" />
+
+declare var HighchartsOfflineExporting: (H: HighchartsStatic) => HighchartsStatic;
+
+declare module "highcharts/modules/offline-exporting" {
+    export = HighchartsOfflineExporting;
+}