diff --git a/ChangeLog b/ChangeLog
index 82bcb863..7691445e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2011-10-23  Giuseppe Scrivano  <gscrivano@gnu.org>
+
+	* bootstrap.conf (gnulib_modules): Include module `vsnprintf'.
+
 2011-10-16  Steven Schubiger  <stsc@member.fsf.org>
 
 	* util/paramcheck.pl: Match 1 or more times where applicable.
diff --git a/bootstrap.conf b/bootstrap.conf
index 9753d9dc..77230dbb 100644
--- a/bootstrap.conf
+++ b/bootstrap.conf
@@ -66,6 +66,7 @@ strerror_r-posix
 unlocked-io
 update-copyright
 vasprintf
+vsnprintf
 write
 "