diff --git a/types/siema/index.d.ts b/types/siema/index.d.ts
index b8faf3d644..c291fa8319 100644
--- a/types/siema/index.d.ts
+++ b/types/siema/index.d.ts
@@ -1,6 +1,7 @@
 // Type definitions for siema 1.4
 // Project: https://github.com/pawelgrzybek/siema
 // Definitions by: Irmantas Zenkus <https://github.com/Irmiz>
+//                 Sam Nau <https://github.com/samnau>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 declare class Siema {
     currentSlide: number;
diff --git a/types/siema/tsconfig.json b/types/siema/tsconfig.json
index 4fe63d2a73..035dfc51d0 100644
--- a/types/siema/tsconfig.json
+++ b/types/siema/tsconfig.json
@@ -2,7 +2,8 @@
     "compilerOptions": {
         "module": "commonjs",
         "lib": [
-            "es6"
+            "es6",
+            "dom"
         ],
         "noImplicitAny": true,
         "noImplicitThis": true,
@@ -20,4 +21,4 @@
         "index.d.ts",
         "siema-tests.ts"
     ]
-}
\ No newline at end of file
+}