diff --git a/.travis.yml b/.travis.yml
index dc520a1..17efbd7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,8 @@
 ---
 sudo: required
 language: objective-c
-# 10.13 (see https://docs.travis-ci.com/user/osx-ci-environment/#OS-X-Version)
-osx_image: xcode9.3
+# 10.14 (see https://docs.travis-ci.com/user/osx-ci-environment/#OS-X-Version)
+osx_image: xcode11.3
 
 before_install:
   # Uninstall existing Homebrew installation.