diff --git a/.travis.yml b/.travis.yml
index 9e9f71c..230b9e2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,7 +3,6 @@ rvm:
   - 2.4.1
   - 2.3.4
   - 2.2.7
-  - 2.1.10
 cache: bundler
 install: bundle install
 script: