diff --git a/.travis.yml b/.travis.yml
index ce6c965..e485069 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -29,5 +29,9 @@ env:
     - TESTFOLDER=test/run-deps
     - TESTFOLDER=test/run-versions
     - TESTFOLDER=test/run-features
+    - CI_NODE_TOTAL=2
     - secure: yjtlPE5FbVxTKnjUy/tZUBgSEf4qADD3QOxtgziuid73S0U/1IEXlMGFULsQzIjtlHKmHeywZqpVVEpthIH4RuT7uoX1Pb7SSM/g0T8fT3VoEFbFK1uYl0oZQbUS4Klxv9tPiumj8if3m6ULEGIz1X0wZcMOC0tMLwVCnwmap0E=
     - secure: ZeFTHWwnpIKE9nAqs88ocmiQh7bKce84lilGm5J23nf3N6V4wNyLwqlkvsM008WGBCaOg9AUx7ZunasT0ANsR5gLP3eV2UUg7ILdRgV2Gy13eNRFheC4PHdN92RqQ3aKoqlIv2K999xlhVjod0NzhkQQXB6PddfQINbuU7ks6As=
+  matrix:
+    - CI_NODE_INDEX=0
+    - CI_NODE_INDEX=1