"LRX21Y"
diff --git a/core/build_id.mk b/core/build_id.mk
index 487676a..d4eef64 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=LRX21X
+export BUILD_ID=LRX21Y