diff --git a/.travis.yml b/.travis.yml
index a1eb935..c315ae1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,7 @@
 language: objective-c
 osx_image: xcode10.3
+before_install:
+- rvm use $(< .ruby-version) --install --binary --fuzzy --create
 install:
 - bundle install --path vendor/bundle
 script: