diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 4cdc10b65..0eace9759 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1065,7 +1065,7 @@ jobs:
           while IFS= read -r preview_tag; do
             [[ -n "$preview_tag" ]] || continue
             echo "🧹 Deleting preview release $preview_tag (tag kept)"
-            gh release delete "$preview_tag" --yes
+            gh release delete "$preview_tag" --repo "${GITHUB_REPOSITORY}" --yes
             DELETED=$((DELETED + 1))
           done < <(
             jq -r --arg tag "$TAG" '
diff --git a/scripts/security/check_preview_release_workflow.sh b/scripts/security/check_preview_release_workflow.sh
index 42d60b931..fe26de139 100755
--- a/scripts/security/check_preview_release_workflow.sh
+++ b/scripts/security/check_preview_release_workflow.sh
@@ -144,7 +144,7 @@ require_line "$build_workflow" "    needs: [ build-check, publish-release ]" "la
 # Preview releases are internal validation artifacts: once the deliverable
 # release is published they are deleted, while their tags stay behind.
 require_job_if "$build_workflow" "cleanup-preview-releases" "    if: $latest_guard"
-require_line "$build_workflow" "            gh release delete \"\$preview_tag\" --yes" "preview release cleanup after publication"
+require_line "$build_workflow" "            gh release delete \"\$preview_tag\" --repo \"\${GITHUB_REPOSITORY}\" --yes" "preview release cleanup after publication"
 require_line "$build_workflow" "              | select(.tag_name | startswith(\$tag + \"-preview.\"))" "cleanup must match the target's own preview tags"
 require_line "$build_workflow" "              | select(.tag_name | ltrimstr(\$tag + \"-preview.\") | test(\"^[0-9]+\$\"))" "cleanup must match a numeric preview iteration"
 require_absent "$build_workflow" "--cleanup-tag" "preview tags must survive their release cleanup"