diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 8c723fd08d2441e3de95bf81c5b2cc7307a2a67c..6b8da3b3f0f09e7cf73f03ad795c790eb8d74d63 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -175,6 +175,8 @@ update_docs:
   trigger:
     project: hub/shiny-k8s-example
     branch: doc-trigger
+  variables:
+    SOURCE_CI_PIPELINE_ID: ${CI_PIPELINE_ID}