diff --git a/.travis.yml b/.travis.yml
index f7ff0dc..58e0268 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -196,6 +196,28 @@ matrix:
     - os: linux
       env: TOOLSET=clang COMPILER=clang++ CXXSTD=c++11
 
+    - os: linux
+      compiler: clang++-3.5
+      env: TOOLSET=clang COMPILER=clang++-3.5 CXXSTD=c++03
+      addons:
+        apt:
+          packages:
+            - clang-3.5
+          sources:
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-precise-3.5
+
+    - os: linux
+      compiler: clang++-3.5
+      env: TOOLSET=clang COMPILER=clang++-3.5 CXXSTD=c++11
+      addons:
+        apt:
+          packages:
+            - clang-3.5
+          sources:
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-precise-3.5
+
     - os: linux
       env: TOOLSET=clang COMPILER=clang++-3.6 CXXSTD=c++03
       addons: