diff --git a/Changes b/Changes
index 2d305d5b1..37b6cc7f5 100644
--- a/Changes
+++ b/Changes
@@ -1,6 +1,7 @@
 Revision history for H2O.
 
-2.3.0-beta2 TBD
+2.3.0-beta2 2019-08-13 17:00:00+0000
+	- [security fix][http2] fix HTTP/2 DoS attack vectors CVE-2019-9512 CVE-2019-9514 CVE-2019-9515 #2090 (Kazuho Oku)
 	- [access-log] add support for logging to unix sockets #1746 (Frederik Deweerdt)
 	- [access-log][proxy] rename key names of proxy timings #2082 (Ichito Nagata)
 	- [file] add if-range header support #1751 (Lingmo Zhu)
@@ -138,6 +139,9 @@ Revision history for H2O.
 	- [misc] fix build issues for Android #1521 (Joel Winarske)
 	- [misc] switch to Docker-based CI #1551 #1580 (Kazuho Oku)
 
+2.2.6 2019-08-13 17:00:00+0000
+	- [security fix][http2] fix HTTP/2 DoS attack vectors CVE-2019-9512 CVE-2019-9514 CVE-2019-9515 #2090 (Kazuho Oku)
+
 2.2.5 2018-06-01 08:00:00+0000
 	- [security fix][access-log] fix buffer overflow CVE-2018-0608 #1775 (Frederik Deweerdt)
 	- [fastcgi] index file name must be part of SCRIPT_NAME #1650 (Ichito Nagata)