diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f7a9bb9f2ab..c28f12f4aff 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -353,7 +353,7 @@ system_tests_param:
       " > set_vars.sh
       source set_vars.sh
     - |
-      if [ "$CI_COMMIT_BRANCH" != "main" ]; then
+      if [ "$CI_COMMIT_BRANCH" != "main" ] && [ "$CI_PIPELINE_SOURCE" != "schedule" ]; then
         export LIBRARIES=""
       fi
     # TEMPORARY: filter LIBRARIES via E2E_SUPPORTED_LANGUAGES (space-separated allowlist)