diff --git a/.travis.yml b/.travis.yml
index 6aa7f2f517..05fba9b6d2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,8 +7,10 @@ rvm:
   - 2.3.5
   - 2.4.2
   - ruby-head
-  - jruby-9.1.15.0
 env:
   global:
     NOBENCHMARK=1
-script: bundle exec rake
+script: rake
+matrix:
+  allow_failures:
+    - rvm: jruby-9.1.15.0
diff --git a/rdoc.gemspec b/rdoc.gemspec
index 8c92908a66..9b4a1f2f0f 100644
--- a/rdoc.gemspec
+++ b/rdoc.gemspec
@@ -59,5 +59,4 @@ RDoc includes the +rdoc+ and +ri+ tools for generating and displaying documentat
   s.add_development_dependency("racc", "> 1.4.10")
   s.add_development_dependency("kpeg")
   s.add_development_dependency("minitest", "~> 4")
-  s.add_development_dependency("json")
 end