diff --git a/.travis.yml b/.travis.yml
index 7577b2d..5c7459e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -25,6 +25,7 @@ addons:
       - "python3"
       - "python3-pip"
       - "python3-setuptools"
+      - "python3-crcmod"
 
 cache:
   - rust