diff --git a/.gitlab-ci-build.yml.in b/.gitlab-ci-build.yml.in
index 74ee9d2..1891062 100644
--- a/.gitlab-ci-build.yml.in
+++ b/.gitlab-ci-build.yml.in
@@ -71,6 +71,7 @@ hyperv-iso.amd64:
   parallel:
     matrix: HYPERV_MATRIX
   script:
+    - packer init sources
     - echo $env:COMMAND > build.ps1
     - echo 'if (-not $?) { throw "Error in build"}' >> build.ps1
     - pwsh .\build.ps1