diff --git a/Internal-Technical-Document-Long-Term-Support-LTS.md b/Internal-Technical-Document-Long-Term-Support-LTS.md
index 9d072a1a..a37d07ba 100644
--- a/Internal-Technical-Document-Long-Term-Support-LTS.md
+++ b/Internal-Technical-Document-Long-Term-Support-LTS.md
@@ -3,5 +3,6 @@
 * Only branches with "lts" prefix are suitable for long term support: GitHub release web functionality creates _tags_, human create lts_yyyy.mmXXX branch from that tag.
 * we pick commits from master into LTS branches
 * after each commit if picked we add/pick Changelog.md
+* use https://github.com/rusefi/rusefi/actions/workflows/build-firmware.yaml to trigger builds
 
 See https://github.com/rusefi/rusefi/labels/LTS