diff --git a/build-cfg.md b/build-cfg.md
new file mode 100644
index 0000000..4ee530c
--- /dev/null
+++ b/build-cfg.md
@@ -0,0 +1,4 @@
+#### Build Config
+- esp-idf: https://github.com/espressif/esp-idf/tree/a322e6b
+- esp-matter: https://github.com/espressif/esp-matter/tree/3ddea04
+- esp-rainmaker: https://github.com/espressif/esp-rainmaker/tree/944a13e