diff --git a/circle.yml b/circle.yml
index 546c0fa..cf4a316 100644
--- a/circle.yml
+++ b/circle.yml
@@ -1,6 +1,8 @@
 machine:
   environment:
     SPEC_OPTS: "-f d --color"
+  ruby:
+    version: 2.1.3
 
 checkout:
   post:
@@ -9,5 +11,5 @@ checkout:
 
 dependencies:
   pre:
-    - wget http://packages.treasuredata.com.s3.amazonaws.com/2/ubuntu/precise/pool/contrib/t/td-agent/td-agent_2.1.3-0_amd64.deb
-    - sudo dpkg -i td-agent_2.1.3-0_amd64.deb
+    - wget http://packages.treasuredata.com.s3.amazonaws.com/2/ubuntu/precise/pool/contrib/t/td-agent/td-agent_2.2.0-0_amd64.deb
+    - sudo dpkg -i td-agent_2.2.0-0_amd64.deb