diff --git a/CHANGELOG.md b/CHANGELOG.md
index c5eaf56438..95b99b45e9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # v1.5
 
+## Release v1.5.2 - 2019/06/13
+
+### Bug fixes
+
+* out_forward: Fix duplicated handshake bug in keepalive
+  https://github.com/fluent/fluentd/pull/2456
+
 ## Release v1.5.1 - 2019/06/05
 
 ### Enhancement
diff --git a/lib/fluent/version.rb b/lib/fluent/version.rb
index aff760c82f..69fea50b2b 100644
--- a/lib/fluent/version.rb
+++ b/lib/fluent/version.rb
@@ -16,6 +16,6 @@
 
 module Fluent
 
-  VERSION = '1.5.1'
+  VERSION = '1.5.2'
 
 end