diff --git a/.travis.yml b/.travis.yml
index b19bd55..c228409 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,12 +8,15 @@ env:
   - COMPILER="g++-4.4"
   - COMPILER="g++-4.8"
   - COMPILER="g++-4.9"
-  - COMPILER="g++-4.5"
   - COMPILER="clang++-3.3"
   - COMPILER="clang++-3.4"
   - COMPILER="clang++-3.5"
   - COMPILER="clang++-3.6"
 
+matrix:
+  allow_failures:
+    - env: COMPILER="clang++-3.5"
+
 before_script:
   - sudo add-apt-repository --yes ppa:ubuntu-toolchain-r/test
   - sudo add-apt-repository --yes ppa:h-rayflood/llvm