diff --git a/.travis.yml b/.travis.yml
index b8e97352..df9cecb6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -20,7 +20,7 @@ script:
 - sudo bash ./create-image
 before_script:
   # Disable IPv6. Ref travis-ci/travis-ci#8711
-  - echo 0 | sudo tee /proc/sys/net/ipv6/conf/all/disable_ipv6
+  - echo 1 | sudo tee /proc/sys/net/ipv6/conf/all/disable_ipv6
 install: echo
 deploy:
   - provider: releases