diff --git a/.circleci/config.yml b/.circleci/config.yml
index 7b17ffc..d34b1b9 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -11,7 +11,7 @@ aliases:
 
   install_node_modules: &install_node_modules
     run:
-      command: npm install
+      command: yarn install --immutable
   save_cache: &save_cache
     save_cache:
       key: yarn-cache-netlify-{{ checksum "yarn.lock" }}