diff --git a/.travis.yml b/.travis.yml
index ac765b2..9c38f02 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,8 +2,11 @@ language: c
 os: linux
 dist: ubuntu
 sudo: required
-install:
-  - sudo apt install doxygen
+before_install:
+    - sudo apt-get install python-software-properties 
+    - sudo apt-add-repository -y ppa:libreoffice/libreoffice-4-2
+    - sudo apt-get update
+    - sudo apt-get install doxygen
 before_script:
   # create a build folder for the out-of-source build
   - mkdir build