diff --git a/circle.yml b/circle.yml
index 6d74323..2dea02b 100644
--- a/circle.yml
+++ b/circle.yml
@@ -1,3 +1,8 @@
+dependencies:
+  pre:
+    # setup ipv6
+    - sudo sysctl -w net.ipv6.conf.lo.disable_ipv6=0 net.ipv6.conf.default.disable_ipv6=0 net.ipv6.conf.all.disable_ipv6=0
+
 machine:
   node:
     version: stable