diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f9d078d..dc1fe85 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -7,6 +7,7 @@ stages:
 
 before_script:
   # configure SSH keys
+  - apt-get update
   - 'which ssh-agent || ( apt-get install -qq openssh-client )'
   - eval $(ssh-agent -s)
   - ssh-add <(echo "$SSH_PRIVATE_KEY")