diff --git a/.travis.yml b/.travis.yml
index 797be58..2f4cfcd 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,8 @@
 os: osx
+osx_image:
+  - xcode11
+  - xcode12
+  - xcode12.5
 language: cpp
 compiler: clang
 before_script: