diff --git a/.travis.yml b/.travis.yml
index cd6d65dad..adb6125b7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,6 @@ php:
 
 before_script:
  - pecl install channel://pecl.php.net/pthreads-3.1.6
- - pecl install channel://pecl.php.net/weakref-0.3.3
  - echo | pecl install channel://pecl.php.net/yaml-2.0.0
 
 script: