diff --git a/.travis.yml b/.travis.yml
index 4ab10b5d19..7979575af7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -78,6 +78,10 @@ install:
    set -ex
    case "$BUILD" in
      style)
+       # This should be resolved (and removed) by Stack 1.6
+       # Follows from https://github.com/commercialhaskell/stack/issues/3178
+       stack --system-ghc --no-terminal install happy
+
        stack --system-ghc --no-terminal install hlint
        ;;
      stack)