diff --git a/.travis.yml b/.travis.yml
index 2dd650fd1..af0e51fa4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -32,8 +32,6 @@ sudo: true
 
 addons:
   apt:
-    sources:
-    - augeas
     packages:  # Keep in sync with letsencrypt-auto-source/pieces/bootstrappers/deb_common.sh and Boulder.
     - python-dev
     - python-virtualenv