diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 6c111d05ebdfeb3eec15e542ff0339e5412e959a..1466a9092e13a1bfa04fb7e0f095473f9cab8e98 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -15,6 +15,8 @@ variables:
   # When using dind, it's wise to use the overlayfs driver for
   # improved performance.
   DOCKER_DRIVER: overlay2
+  # https://about.gitlab.com/2019/07/31/docker-in-docker-with-docker-19-dot-03/
+  DOCKER_TLS_CERTDIR: ""
 
 services:
   - name: docker:dind