diff --git a/CHANGELOG.md b/CHANGELOG.md
index 453c30e..d9eccc9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,10 @@
 # CHANGELOG
 
+## v1.0.0
+
+* Dropped support for Ruby < 2.3
+* Fixed deprecation warning in Ruby 2.7
+
 ## v0.2.5
 
 * MIT license specified in gemspec
diff --git a/lib/utf8-cleaner/version.rb b/lib/utf8-cleaner/version.rb
index 2db4180..cbe3541 100644
--- a/lib/utf8-cleaner/version.rb
+++ b/lib/utf8-cleaner/version.rb
@@ -1,3 +1,3 @@
 module UTF8Cleaner
-  VERSION = "0.2.5"
+  VERSION = "1.0.0"
 end