diff --git a/.travis.yml b/.travis.yml
index 29944b7a9759051cfb3ecff5f71e787e114963af..ed294de5c8e6dc4496dee86d17d94b03fc34a4a1 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -121,4 +121,4 @@ deploy:
     # all_branches is required to use tags
     all_branches: true
     # Only publish if our main Ruby target builds
-    rvm: 2.1.9
+    rvm: 2.4