diff --git a/src/general-info/release-21b.txt b/src/general-info/release-21b.txt
index 9c3ba2da6c642d2a595e420943ae106d7da48f4c..92a2bb0108431cd5777b87286fb0bef7d2895ef4 100644
--- a/src/general-info/release-21b.txt
+++ b/src/general-info/release-21b.txt
@@ -59,6 +59,7 @@ New in this release:
       control stack are now mapped into memory wherever the OS wishes
       to place them instead of being mapped into a fixed location.
       This is indicated by new feature :relocatable-stacks.
+    * Building on NetBSD now requires version 7.0 or later.
 
   * ANSI compliance fixes:
     * PATHNAME-MATCH-P did not accept search-lists.