diff --git a/AUTHORS b/AUTHORS
index ba2d365f..ca38a83f 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -5,6 +5,15 @@ The `dynamic-wind' implementation is adapted from the implementation
 in the appendix to the Scheme48 reference manual, reportedly first
 written by Chris Hanson and John Lamping.
 
+The (scheme time) module includes code for handling leap seconds
+from Alan Watson's Scheme clock library at
+http://code.google.com/p/scheme-clock/ under the same license.
+
+The benchmarks are based on the Racket versions of the classic
+Gabriel benchmarks from
+http://www.cs.utah.edu/~mflatt/benchmarks-20100126/log3/index.html.
+They are not installed or needed but are included for convenience.
+
 Thanks to the following people for patches and bug reports:
 
   * Alan Watson