diff --git a/.circleci/config.yml b/.circleci/config.yml
index 0cdb277..b5755db 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -11,4 +11,5 @@ jobs:
           name: The First Step
           command: |
             echo 'Hello World!'
+            npm-v1-dependencies-{{ checksum "yarn.lock" }}
             yarn global add node-gyp && yarn install
\ No newline at end of file