diff --git a/.circleci/config.yml b/.circleci/config.yml
index 5af65976..6e2b5454 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -112,7 +112,7 @@ jobs:
       - run:
           name: Build
           no_output_timeout: "30m"
-          command: npm run build:dev
+          command: npm run build:dev && npm pack --dry-run
       - save-sccache-cache
   zokrates_js_test:
     docker: