diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 4e63f1ae97cedbcfbc05811808765308c73b2ea9..1747232af9a5374fa5c8548bf4014a1375632330 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,6 +1,7 @@
 before_script:
     - apt-get update
-    - apt-get install -y -qq make cmake libboost-test-dev gem 
+    - apt-get install -y -qq make cmake libboost-test-dev gem
+    - echo "deb http://ftp.us.debian.org/debian unstable main contrib non-free" > /etc/apt/sources.list.d/unstable.list
     - apt-get install -y gcc-5
     - gem install funit
     - ./build.sh