diff --git a/.circleci/config.yml b/.circleci/config.yml
index 59b42a6..5bfbaea 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -8,7 +8,7 @@ jobs:
       - checkout
       - restore_cache:
           key: dependency-cache-{{ checksum "yarn.lock" }}
-      - run: yarn install
+      - run: yarn install --frozen-lockfile
       - save_cache:
           key: dependency-cache-{{ checksum "yarn.lock" }}
           paths: