diff --git a/.travis.yml b/.travis.yml
index e6faa14bb..5184b26bb 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,9 +7,7 @@ matrix:
     - os: linux
       compiler: clang
       jdk: oraclejdk7
-      env:
-        - TARGET=cpp
-        - CXX=g++-5
+      env: TARGET=cpp
       addons:
         apt:
           sources:
@@ -21,7 +19,6 @@ matrix:
             - clang-3.7
     - os: osx
       compiler: clang
-      osx_image: xcode8.1
       env: TARGET=cpp
       addons:
         apt:
@@ -47,7 +44,6 @@ matrix:
       env: TARGET=csharp
     - os: linux
       jdk: oraclejdk7
-      dist: trusty
       env: TARGET=dotnet
     - os: linux
       jdk: oraclejdk7