diff --git a/.travis.yml b/.travis.yml
index e873edc9..49855910 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,6 +8,7 @@ rvm:
 env:
   global:
   - RESQUE_SCHEDULER_DISABLE_TEST_REDIS_SERVER=1
+  - JRUBY_OPTS='-Xcext.enabled=true'
 services:
 - redis-server
 notifications: