diff --git a/.travis.yml b/.travis.yml
index ecd34fc..ca51ce4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,3 +6,11 @@ compiler:
  - gcc
 script: mkdir build && cd build && cmake -DCOVERALLS=ON -DCMAKE_BUILD_TYPE=Debug .. && cmake --build . && cmake --build . --target coveralls
 install: true
+
+addons:
+  apt:
+    sources:
+      - george-edison55-precise-backports # cmake 3.2.3 / doxygen 1.8.3
+    packages:
+      - cmake
+      - cmake-data