diff --git a/CHANGELOG.md b/CHANGELOG.md
index 70f4393d..d508c836 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 0.13.3
+- Add transformer class for [Kernel PCA](https://yoshoku.github.io/rumale/doc/Rumale/KernelMachine/KernelPCA.html).
+- Add regressor class for [Kernel Ridge](https://yoshoku.github.io/rumale/doc/Rumale/KernelMachine/KernelRidge.html).
+
 # 0.13.2
 - Add preprocessing class for label binarization.
 - Fix to use LabelBinarizer instead of OneHotEncoder.
diff --git a/lib/rumale/version.rb b/lib/rumale/version.rb
index db568a83..d196d9dd 100644
--- a/lib/rumale/version.rb
+++ b/lib/rumale/version.rb
@@ -3,5 +3,5 @@
 # Rumale is a machine learning library in Ruby.
 module Rumale
   # The version of Rumale you are using.
-  VERSION = '0.13.2'
+  VERSION = '0.13.3'
 end