diff --git a/.travis.yml b/.travis.yml
index 0e198ad..61e1ff9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -6,6 +6,7 @@ python:
   - "3.5"
   - "3.6"
 install:
+  - pip install i3ipc
   - pip install psutil
   - pip install netifaces
   - pip install -U coverage==4.3