diff --git a/.circleci/config.yml b/.circleci/config.yml
index 784356cd2..1ac8fdd4a 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -36,6 +36,8 @@ jobs:
       - run:
           name: install dependencies
           command: |
+            sudo apt-get update
+            sudo apt-get install --allow-unauthenticated debian-archive-keyring
             gem install bundler:2.4.22
             bundle install --path vendor/bundle
             sudo rm /etc/apt/sources.list