diff --git a/.travis.yml b/.travis.yml
index 08772c1..bfc7002 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -79,7 +79,7 @@ matrix:
       osx_image: xcode9.4
       env: XCODE="true"
     - os: osx
-      osx_image: xcode10.1
+      osx_image: xcode12.5
       env: XCODE="true" CHECK="true"
 
 # run coveralls