diff --git a/.travis.yml b/.travis.yml
index fe13ba3..ebdfd52 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,3 +1,7 @@
+os: linux
+arch:
+ - amd64
+ - ppc64le
 sudo: required
 # The default environment is Ubuntu 12.04, which only has GCC 4.6.
 dist: trusty