add Debian stable to travis image for text-xslate-perl

diff --git a/.travis.yml b/.travis.yml
index 8d224a7a96e00e71f327093d3d6b1cad743d7c22..9501c082ca974420beb74e4b86976e23fce517f4 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,7 @@
 dist: trusty
 sudo: required
 before_install:
+  - sudo add-apt-repository 'deb http://deb.debian.org/debian/ stable main non-free contrib'
   - sudo apt-get -qq update
   - sudo apt-get install -y devscripts equivs
   - dch -r -m ''