1 files changed, 4 insertions, 0 deletions
diff --git a/.travis.yml b/.travis.yml
index cde2b2d..29b56ce 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,6 +6,10 @@ before_install:
   - sudo apt-get install clang-3.9
 language: cpp
 compiler: clang
+  addons:
+    apt:
+      packages:
+        - clang-3.9
 addons:
   apt:
     packages: