diff --git a/.travis.yml b/.travis.yml
index 3ea88705..2a727211 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -20,7 +20,7 @@ jobs:
         - MATRIX_EVAL="CC=clang-3.8 && CXX=clang++-3.8"
         - SDKS=episode1,css,tf2,l4d2,csgo,dota
         - MODE=optimize
-        - ARCH=x86
+        - ARCH=x86,x64
 
     - os: linux
       dist: trusty
@@ -34,7 +34,7 @@ jobs:
         - MATRIX_EVAL="CC=clang && CXX=clang++"
         - SDKS=episode1,css,tf2,l4d2,csgo,dota
         - MODE=optimize
-        - ARCH=x86
+        - ARCH=x86,x64
 
     - os: osx
       osx_image: xcode7.2
@@ -43,7 +43,7 @@ jobs:
         - MATRIX_EVAL="CC=clang && CXX=clang++"
         - SDKS=episode1,css,tf2,l4d2,csgo,dota
         - MODE=optimize
-        - ARCH=x86_64,x86
+        - ARCH=x64,x86
 
     # # This is a faster test for the latest g++.
     # - os: linux