diff --git a/.travis.yml b/.travis.yml
index c5e2549d..0e7edd12 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -94,9 +94,9 @@ matrix:
           packages: ["clang-5.0", "g++-7"]
           sources: *apt_sources
 
-    - env: COMPILER=clang++
-      osx_image: xcode6.4
-      os: osx
+    # - env: COMPILER=clang++
+    #   osx_image: xcode6.4
+    #   os: osx
 
     # - env: COMPILER=clang++
     #   osx_image: xcode7.3
@@ -126,10 +126,10 @@ matrix:
       osx_image: xcode9.1
       os: osx
 
-    - env: COMPILER=g++-5
-      compiler: gcc
-      osx_image: xcode9.1
-      os: osx
+    # - env: COMPILER=g++-5
+    #   compiler: gcc
+    #   osx_image: xcode9.1
+    #   os: osx
 
     # - env: COMPILER=g++-6
     #   compiler: gcc