diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f5dbe30ad..b0db54f77 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -85,7 +85,7 @@ get-dockerfile:
   stage: build
   script:
     - apt-get update
-    - apt-get install -y --no-install-recommends git
+    - apt-get install -y git ca-certificates
     - git clone https://github.com/carlesfernandez/docker-gnsssdr
   artifacts:
     paths: