diff --git a/CHANGELOG.md b/CHANGELOG.md
index f6c5bd88..05dadda2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,8 @@
 
 ## master (unreleased)
 
+## 0.12.1 (2021-04-25)
+
 ### Bug fixes
 
 * [#131](https://github.com/rubocop/rubocop-minitest/issues/131): Fix an error for `Minitest/MultipleAssertions` and fixes a false positive for `test` block. ([@koic][])
diff --git a/docs/antora.yml b/docs/antora.yml
index e4970cf0..9429332c 100644
--- a/docs/antora.yml
+++ b/docs/antora.yml
@@ -2,6 +2,6 @@ name: rubocop-minitest
 title: RuboCop Minitest
 # We always provide version without patch here (e.g. 1.1),
 # as patch versions should not appear in the docs.
-version: master
+version: '0.12'
 nav:
 - modules/ROOT/nav.adoc
diff --git a/lib/rubocop/minitest/version.rb b/lib/rubocop/minitest/version.rb
index 6ebd6b78..5fb395b1 100644
--- a/lib/rubocop/minitest/version.rb
+++ b/lib/rubocop/minitest/version.rb
@@ -4,7 +4,7 @@ module RuboCop
   module Minitest
     # This module holds the RuboCop Minitest version information.
     module Version
-      STRING = '0.12.0'
+      STRING = '0.12.1'
 
       def self.document_version
         STRING.match('\d+\.\d+').to_s
diff --git a/relnotes/v0.12.1.md b/relnotes/v0.12.1.md
new file mode 100644
index 00000000..33fb5974
--- /dev/null
+++ b/relnotes/v0.12.1.md
@@ -0,0 +1,5 @@
+### Bug fixes
+
+* [#131](https://github.com/rubocop/rubocop-minitest/issues/131): Fix an error for `Minitest/MultipleAssertions` and fixes a false positive for `test` block. ([@koic][])
+
+[@koic]: https://github.com/koic