"LRX21Z"
diff --git a/core/build_id.mk b/core/build_id.mk
index d4eef64..507b17f 100644
--- a/core/build_id.mk
+++ b/core/build_id.mk
@@ -18,4 +18,4 @@
 # (like "CRB01").  It must be a single word, and is
 # capitalized by convention.
 
-export BUILD_ID=LRX21Y
+export BUILD_ID=LRX21Z