diff --git a/.travis.yml b/.travis.yml
index 0573322..b5ac60a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -23,7 +23,10 @@ addons:
     sources:
     - ubuntu-toolchain-r-test
     - llvm-toolchain-precise-3.5
+    - george-edison55-precise-backports # cmake 3.2.3
     packages:
+    - cmake
+    - cmake-data
     - gcc-4.9
     - g++-4.9
     - clang-3.5