diff --git a/.travis.yml b/.travis.yml
index bb33a2f7d1311983afc2a0e704a2138442d6c15d..95bad8e720d5e53dced023712484804358058e60 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,6 +9,7 @@ addons:
   apt:
     packages:
       - libunicode-linebreak-perl
+      - python3-polib
 notifications:
   email:
     on_success: never