diff --git a/.travis.yml b/.travis.yml
index 5bf7457..1677b7f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,3 +1,4 @@
+language: minimal
 sudo: require
 services:
   - docker
diff --git a/spec/dummy/app/assets/config/manifest.js b/spec/dummy/app/assets/config/manifest.js
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/spec/dummy/app/assets/config/manifest.js
@@ -0,0 +1 @@
+