diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8c7a3ed..2cc09c8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## [1.2.1]
 
 - Updates rubocop-performance from 1.19.0 to [1.19.1](https://github.com/rubocop/rubocop-performance/releases/tag/v1.19.1)
 
diff --git a/Gemfile.lock b/Gemfile.lock
index 5abdd31..cbf25a7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    standard-performance (1.2.0)
+    standard-performance (1.2.1)
       lint_roller (~> 1.1)
       rubocop-performance (~> 1.19.1)
 
diff --git a/lib/standard/performance/version.rb b/lib/standard/performance/version.rb
index 4ff7165..0c57b78 100644
--- a/lib/standard/performance/version.rb
+++ b/lib/standard/performance/version.rb
@@ -1,5 +1,5 @@
 module Standard
   module Performance
-    VERSION = "1.2.0"
+    VERSION = "1.2.1"
   end
 end