diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 67622f6..5d7e18a 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -4,6 +4,9 @@ stages:
 variables:
   IMAGE_NAME: "$CI_REGISTRY_IMAGE"
   IMAGE_NAME_DOCKERHUB: "index.docker.io/bruceforce/bw_backup"
+  # see https://gitlab.com/gitlab-org/gitlab-runner/issues/4501
+  DOCKER_DRIVER: overlay2
+  DOCKER_TLS_CERTDIR: "/certs"
 
 .docker_login: &docker_login
   docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" $CI_REGISTRY