diff --git a/.travis.yml b/.travis.yml
index 65cda75..d8dce12 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,10 +5,12 @@ php:
   - 5.5
   - 5.6
   - hhvm
+  - hhvm-nightly
 
 matrix:
   allow_failures:
     - php: hhvm
+	- php: hhvm-nightly
 
 branches:
   only:
@@ -28,6 +30,8 @@ before_script:
   - echo "extension = memcached.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini
   - echo "extension = redis.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini
   - echo -e "zend_$(cat ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini)" > ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini
+  - echo "zend_extension = /home/travis/.phpenv/versions/$(php -r 'echo phpversion();')/lib/php/extensions/no-debug-zts-20131226/uopz.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini
+  - echo "zend_extension = /home/travis/.phpenv/versions/$(php -r 'echo phpversion();')/lib/php/extensions/no-debug-zts-20121212/uopz.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini
   - echo "zend_extension = /home/travis/.phpenv/versions/$(php -r 'echo phpversion();')/lib/php/extensions/no-debug-zts-20100525/uopz.so" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini
   - echo "[uopz]" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini
   - echo "uopz.overloads=1" >> ~/.phpenv/versions/$(phpenv version-name)/etc/php.ini