diff --git a/.travis.yml b/.travis.yml
index 911f57a..abce683 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -27,7 +27,7 @@ before_install:
  - sudo add-apt-repository ppa:ondrej/php5-5.6 -y
  - sudo apt-get update -qq
 install:
- - sudo apt-get install -y help2man libedit-dev
+ - sudo apt-get install -y help2man libedit-dev expect
 before_script:
  - mkdir build
  - cd build