diff --git a/.travis.yml b/.travis.yml
index 5e4ed2c..edffd15 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -18,6 +18,7 @@ env:
 - ARGS="--resolver lts-3"
 - ARGS="--resolver lts-4"
 - ARGS="--resolver lts-5"
+- ARGS="--resolver lts-6"
 - ARGS="--resolver lts"
 - ARGS="--resolver nightly"