diff --git a/.travis.yml b/.travis.yml
index 2e14635..6a243ef 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -20,6 +20,9 @@ matrix:
   - rvm: jruby
     gemfile: spec/gemfiles/rails_5_2.gemfile
     env: DB=postgresql DB_USERNAME=postgres DB_PASSWORD=""
+  - rvm: jruby
+    gemfile: spec/gemfiles/rails_5_1.gemfile
+    env: DB=postgresql DB_USERNAME=postgres DB_PASSWORD=""
 env:
   matrix:
   # Username and password from http://docs.travis-ci.com/user/database-setup/