diff --git a/.travis.yml b/.travis.yml
index fb5fa0217a..a4f56d9d3a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -20,7 +20,6 @@ mono: none
 os:
   - linux
   - osx
-osx_image: xcode7.3
 branches:
   only:
     - master
diff --git a/appveyor.yml b/appveyor.yml
index d622af030a..30450f6367 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -12,4 +12,4 @@ build_script:
 clone_depth: 1
 test: off
 deploy: off
-os: Visual Studio 2017 RC
+os: Visual Studio 2017