diff --git a/.travis.yml b/.travis.yml
index ddf03015..adfba74d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -27,13 +27,6 @@ addons: &clang35
       - ubuntu-toolchain-r-test
       - llvm-toolchain-precise-3.5
 
-addons: &clang6
-  apt:
-    packages:
-      - clang-6.0
-    sources:
-      - ubuntu-toolchain-r-test
-      - llvm-toolchain-trusty-6.0
 
 
 matrix:
@@ -60,14 +53,12 @@ matrix:
       os: linux
       addons: *clang35
 
-      # Test clang-6.0: C++11, Build=Debug, ASAN=On
-    - env: CLANG_VERSION=6.0 BUILD_TYPE=Debug CPP=11 ASAN=On TSAN=Off
-      os: linux
-      addons: *clang6
+      # Test clang-7.0: C++11, Build=Debug, ASAN=On
+    - env: CLANG_VERSION=7.0 BUILD_TYPE=Debug CPP=11 ASAN=On TSAN=Off
+      os: linux      
 
-    - env: CLANG_VERSION=6.0 BUILD_TYPE=Release CPP=11 ASAN=On TSAN=Off
-      os: linux
-      addons: *clang6
+    - env: CLANG_VERSION=7.0 BUILD_TYPE=Release CPP=11 ASAN=On TSAN=Off
+      os: linux      
 
       # osx
     - env: BUILD_TYPE=Release CPP=11 ASAN=Off TSAN=Off