diff --git a/CHANGELOG.md b/CHANGELOG.md
index 184ad9ea5a..75d9ea9e25 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,13 +13,21 @@
 
 * output: Show better message for secondary warning
   https://github.com/fluent/fluentd/pull/2751
-* Clean up code for ruby 2.7
+* Use `ext_monitor` gem if it is installed. For ruby 2.6 or earlier
+  https://github.com/fluent/fluentd/pull/2670
+* Support Ruby's Time class in msgpack serde
+  https://github.com/fluent/fluentd/pull/2775
+* Clean up code
   https://github.com/fluent/fluentd/pull/2753
+  https://github.com/fluent/fluentd/pull/2763
+  https://github.com/fluent/fluentd/pull/2764
 
 ### Bug fixes
 
 * outut/buffer: Fix stage size computation
   https://github.com/fluent/fluentd/pull/2734
+* server: Ignore Errno::EHOSTUNREACH in TLS accept to avoid fluentd restart
+  https://github.com/fluent/fluentd/pull/2773
 
 # v1.8
 
diff --git a/lib/fluent/version.rb b/lib/fluent/version.rb
index 359248ed39..a7dd02bf9b 100644
--- a/lib/fluent/version.rb
+++ b/lib/fluent/version.rb
@@ -16,6 +16,6 @@
 
 module Fluent
 
-  VERSION = '1.9.0.rc1'
+  VERSION = '1.9.0.rc2'
 
 end