diff --git a/.travis.yml b/.travis.yml
index ebdbf12..5628753 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,10 @@
 language: node_js
 
+os:
+  - linux
+  - osx
+  - windows
+
 node_js:
  - "8"
  - "10"