diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index d969934..4cf1e17 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -28,6 +28,7 @@ build-iso-image:
 
   # script for building artifacts
   script:
+    - apt update && apt upgrade -y && apt install build-essential bc file
     - ./scripts/build_image.sh build
 
   # installing artifacts to artifacts directory