Install gcc-multilib on linux
diff --git a/.travis.yml b/.travis.yml
index 300a5d6..46d7ee4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -19,3 +19,7 @@
     - os: linux
       env: TARGET=arm-linux-androideabi
       rust: stable
+addons:
+  apt:
+    packages:
+      - gcc-multilib