diff --git a/.circleci/config.yml b/.circleci/config.yml
index b0399d46e..06e74cc29 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -11,6 +11,12 @@ jobs:
 
     steps:
       - checkout
+      - run:
+          name: Check for large files
+          command: |
+            set +e
+            find . -size +1Mc -not -path './.git/*' | grep .
+            (( $? == 1 ))
       - run: make check-file-headers
       - run: npm ci --legacy-peer-deps
       - run: node lib/bin/create-docker-databases.js