diff --git a/.travis.yml b/.travis.yml
index 3133409..786ba9d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,6 +9,7 @@ addons:
   apt:
     packages:
       - libgirepository1.0-dev
+      - upx-ucl
 
 install:
   - pip install -r requirements.txt