diff --git a/.travis.yml b/.travis.yml
index b8f60ce2e5..e4c69a2a09 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -18,7 +18,6 @@ mono: none
 os:
   - linux
   - osx
-osx_image: xcode7.3
 branches:
   only:
     - master
diff --git a/appveyor.yml b/appveyor.yml
index 3f828ce38e..1041615c68 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -11,4 +11,4 @@ build_script:
 clone_depth: 1
 test: off
 deploy: off
-os: Visual Studio 2017 RC
+os: Visual Studio 2017