diff --git a/.travis.yml b/.travis.yml
index ed6845d..76ed4e2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,7 @@ language: c
 
 matrix:
   include:
-  - windows
+  - os: windows
   - os: osx
   - os: linux
     env: CC=clang CXX=clang++ npm_config_clang=1