diff --git a/.circleci/config.yml b/.circleci/config.yml
index 0c068c6f..a952415d 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -22,6 +22,12 @@ jobs:
     executor: << parameters.jdk >>
     steps:
       - checkout
+      - run:
+          name: Sleep to avoid resource name conflict
+          command: |
+            if [[ $CIRCLE_JOB != "build-jdk8" ]]; then
+              sleep $((15 + RANDOM % 15))
+            fi
       - maven/with_cache:
           steps:
             - run:
diff --git a/README.md b/README.md
index 6dbf688c..066d97b0 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,7 @@
 
 # td-client for java
 
-A java client for accessing [Treasure Data API](http://docs.treasuredata.com/articles/rest-api).
+A java client for accessing [Treasure Data API](https://api-docs.treasuredata.com/en/api/td-api/quickstart/).
 With this client, you can:
  - submit Hive/Presto queries to Treasure Data
  - check the status of jobs (queries)