diff --git a/.travis.yml b/.travis.yml
index 7bbd2d0..088a9b9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,9 @@
 language: node_js
 
+os:
+  - linux
+  - osx
+
 node_js:
   - "15"