diff --git a/CHANGELOG.md b/CHANGELOG.md
index 51c6a61..e1c0350 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,9 @@
 ## [Unreleased]
 
-## [[0.3.2](https://github.com/yoshoku/numo-tiny_linalg/compare/v0.3.1...v0.4.0)] - 2023-09-04
+## [[0.3.3](https://github.com/yoshoku/numo-tiny_linalg/compare/v0.3.2...v0.3.3)] - 2023-09-27
+- Remove unnecessary `-std=c++11` option.
+
+## [[0.3.2](https://github.com/yoshoku/numo-tiny_linalg/compare/v0.3.1...v0.3.2)] - 2023-09-04
 - Bump OpenBLAS to be downloaded from 0.3.23 to 0.3.24.
 
 ## [[0.3.1](https://github.com/yoshoku/numo-tiny_linalg/compare/v0.3.0...v0.3.1)] - 2023-08-15
diff --git a/lib/numo/tiny_linalg/version.rb b/lib/numo/tiny_linalg/version.rb
index 4953a80..2f9cbbf 100644
--- a/lib/numo/tiny_linalg/version.rb
+++ b/lib/numo/tiny_linalg/version.rb
@@ -5,6 +5,6 @@ module Numo
   # Numo::TinyLinalg is a subset library from Numo::Linalg consisting only of methods used in Machine Learning algorithms.
   module TinyLinalg
     # The version of Numo::TinyLinalg you install.
-    VERSION = '0.3.2'
+    VERSION = '0.3.3'
   end
 end