diff --git a/.travis.yml b/.travis.yml
index 9985a15c7990b943a171c8e4247b91426efb75e3..93191ee34340db11e6c47dc3924f1ad7cc38e7ca 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,11 @@
 language: cpp
 
 env:
-  - BUILD_TYPE=Debug
-  - BUILD_TYPE=Release
+  global:
+    - CTEST_PARALLEL_LEVEL=4
+  matrix:
+    - BUILD_TYPE=Debug
+    - BUILD_TYPE=Release
 
 matrix:
   include: