diff --git a/.travis.yml b/.travis.yml
index 91e4b5bec25ddcfbde4f75276616b8d44581fb32..d04a7c1e580a6b5ea10ef2e3b4fc212609cc5198 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -11,8 +11,12 @@ matrix:
   include:
     - env: NIX_CHANNEL=https://nixos.org/channels/nixpkgs-unstable
     - env: NIX_CHANNEL=https://nixos.org/channels/nixos-unstable
+    - env: NIX_CHANNEL=https://nixos.org/channels/nixos-18.03
+  # cachix will be introduced in 18.09, so we just allow a failure for now
+sudo: false
 language: nix
 
+  include:
 
 install:
  - nix --version