diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d79b8b717e11ecae46943e24b9c3e41924bcae3f..4d10e2dcc3bac605d758c9444a16d2e39813b837 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -34,6 +34,7 @@ variables:
   # shared volume for docker-in-docker
   DOCKER_TLS_CERTDIR: "/certs"
   DOCKER_CERT_PATH: "$DOCKER_TLS_CERTDIR/client"
+  DOCKER_TLS_VERIFY: 1
 
   PIP_CACHE_DIR: "$CI_PROJECT_DIR/.cache/pip"