diff --git a/.travis.yml b/.travis.yml
index 822cd120..b7125e16 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -33,7 +33,7 @@ matrix:
     env: COMPILER=clang-3.8
     addons:
       apt:
-        sources: ['ubuntu-toolchain-r-test', 'llvm-toolchain-trusty-3.7']
+        sources: ['ubuntu-toolchain-r-test', 'llvm-toolchain-precise-3.7']
         packages: ['g++-6', 'clang-3.7']
 
 ################