diff --git a/build/BUILD_NOTES.md b/build/BUILD_NOTES.md
index aea939da..be0730dd 100644
--- a/build/BUILD_NOTES.md
+++ b/build/BUILD_NOTES.md
@@ -24,6 +24,7 @@ Required "-dev" packages:
 * libboost-program-options-dev
 * libboost-regex-dev
 * libboost-system-dev
+* libboost-date-time-dev
 * libcrypto++-dev
 
 FreeBSD