CHANGELOG.md in telegram-bot-0.15.1 vs CHANGELOG.md in telegram-bot-0.15.2

@@ -1,6 +1,10 @@
 # Unreleased
 
+# 0.15.2
+
+- Ruby 3.0 support. Drop support for Ruby < 2.4.
+
 # 0.15.1
 
 - Rails 6.1 support.
 
 # 0.15.0