diff --git a/.travis.yml b/.travis.yml
index cddf565..907a885 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,7 +10,7 @@ rvm:
   - 2.1
   - 2.2
   - 2.3.5
-  - 2.4.1
+  - 2.4.0
   - ruby-head
 
 sudo: true # Necessary to fix JRuby
@@ -31,5 +31,6 @@ env:
 matrix:
   allow_failures:
     - rvm: rbx-3
+    - rvm: jruby-9.1.9.0
     - rvm: ruby-head
     - env: "CHILDPROCESS_POSIX_SPAWN=true"