diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 347c2d8..ad02347 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -4,5 +4,7 @@ stages:
 unit-test-job:
   stage: test
   script:
-    - apt install unzip
+    - apt-get update
+    - apt-get upgrade
+    - apt-get install unzip
     - julia --project=julia/Project.toml -E 'using Pkg; Pkg.test()'