.travis.yml in mini_racer-0.3.1 vs .travis.yml in mini_racer-0.4.0.beta1

@@ -1,17 +1,31 @@
 language: ruby
+os: linux
 rvm:
+  - 2.4
   - 2.5
   - 2.6
   - 2.7
+  - 3.0
   - ruby-head
-matrix:
+arch:
+  - amd64
+  - arm64
+jobs:
   include:
-    - rvm: 2.5.1
+    - rvm: 2.5
       os: osx
       osx_image: xcode9.4
-dist: trusty
-sudo: true
+    - rvm: 2.6
+      os: osx
+      osx_image: xcode11.3
+    - rvm: 2.6
+      os: osx
+      osx_image: xcode12.2
+    - rvm: 2.7
+      os: osx
+      osx_image: xcode12.2
+dist: xenial
 before_install:
   - gem update --system
   - gem install bundler -v 1.16.2
 cache: bundler