diff --git a/.travis.yml b/.travis.yml
index 6c85d5add21bde18440b5978e9863ae52a39a686..471e4e2df74e8690ef83a2fc116e70b31845e64d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,5 @@
 language: perl
 install:
-  - sudo apt-get install git ruby-ronn
+  - sudo apt-get install git ruby-ronn libshell-command-perl
 script:
   - make test