diff --git a/.travis.yml b/.travis.yml
index d0fa781..f91628c 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -23,16 +23,16 @@ os:
 
 matrix:
   include:
-    #- compiler: clang
-    #  env: TOOLSET=clang-3.4
+    - compiler: clang
+      env: TOOLSET=clang-3.4
     #- compiler: clang
     #  env: TOOLSET=clang-3.5
     #- compiler: gcc
     #  env: TOOLSET=gcc-4.7
     #- compiler: gcc
     #  env: TOOLSET=gcc-4.8
-    - compiler: gcc
-      env: TOOLSET=gcc-4.9
+    #- compiler: gcc
+    #  env: TOOLSET=gcc-4.9
 
 before_install: wget "https://raw.githubusercontent.com/boostorg/regression/develop/ci/src/script.py"
 install: python script.py travis_install