diff --git a/RELEASE_NOTES b/RELEASE_NOTES
index 2bbe113e..a05e4178 100644
--- a/RELEASE_NOTES
+++ b/RELEASE_NOTES
@@ -71,6 +71,8 @@ release, and a summary of the changes in that release.
 		oversized input lines.  Reported by Mars Peng.
 	LIBOPENDKIM: Fix parsing bug in dkim_mail_parse_multi(), where quotes
 		were not being properly handled.
+	LIBOPENDKIM: Fix implicit function declaration for snprintf.
+		Patch from Michael Orlitzky (PR #170).
 	TOOLS: Feature requrest #187: Add option to match subdomains when
 		generating zone files.  Patch from Andreas Schulze.
 	TOOLS: opendkim-genkey: Use a functional test for OpenSSL ed25519