diff --git a/.travis.yml b/.travis.yml
index a214e15..b8e6096 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,7 +3,7 @@ sudo: required
 language: minimal
 env:
   global:
-    - S6_VERSION="2.1.0.2"
+    - S6_VERSION="2.2.0.1"
     - DOCKER_CLI_EXPERIMENTAL="enabled"
 before_install:
   - sudo apt-get install -y apt-transport-https ca-certificates curl gnupg-agent software-properties-common