diff --git a/store/README.md b/store/README.md
index 0f318eba3d86dd916ea4ea06adb4f392a77e0429..713ad29fdf6c8eb457bb234661d5993422bb5e4c 100644
--- a/store/README.md
+++ b/store/README.md
@@ -84,3 +84,7 @@ many writes get commited by the end user.
 Hence, BoltDB is a better choice. It performs better for reads/seeks, despite DGraph needing
 a value copy. Writes are somewhat slower, but that shouldn't be a problem because of the
 above mentioned reasons.
+
+**Update**: Just realized that BoltDB only allows a SINGLE writer at any point in time.
+This is equivalent to a global mutex lock. That'd essentially kill DGraph's performance. So,
+BoltDB is out!