diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 068ee6be961efee2f138d95d0534c838b35c2051..61f9fb547773af9bf345db9a4a47eb3a2fa1e178 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -115,5 +115,6 @@ test-install-debian-job:
   tags:
     - "docker"
   script:
+    - apt update
     - apt install -y ./verapdf*.deb
     - ${INSTALL_PATH_VERAPDF_DEB}/verapdf --version | grep "${VERAPDF_VERSION}"