diff --git a/.travis.yml b/.travis.yml
index 85309e84a4ccf99759fee638343e5c86335ee8de..9c089387957a9d83813f430009ef2ca11c315038 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,7 +2,7 @@ sudo: required
 language: java
 before_install:
   - sudo apt-get -qq update
-  - sudo apt-get install -y texlive-full
+  - sudo apt-get install -y texlive-full python-imaging
 install:
   - wget -O plastex.tar.gz https://github.com/tiarno/plastex/archive/1.0.0.tar.gz
   - tar -xzvf plastex.tar.gz