diff --git a/.travis.yml b/.travis.yml
index b60c9e0..184a9e6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -17,6 +17,7 @@ matrix:
         - ./cc-test-reporter after-build --exit-code $TRAVIS_TEST_RESULT
     - rvm: 2.7.3
     - rvm: 3.0.1
+    - rvm: 3.1.0
     - rvm: jruby-9.2.17.0
       env:
         - JRUBY_OPTS="--debug"