diff --git a/CHANGELOG.md b/CHANGELOG.md
index b4bdebb..c5a4ce6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # CHANGELOG
 
+## 1.6.6
+
+* Drop support of Ruby 2.3
+* Drop support of Ruby 2.4
+* Add support of Ruby 2.6
+* Add support of Ruby 2.7
+* Add support of Ruby 3.0
+* Drop support of Rails 5.1
+* Add support of Rails 6.0
+* Add support of Rails 6.1
+* Add binstubs to ease development
+* Migrate from Travis to Github Actions
+
 ## 1.6.5
 
 * Merge [Fixnum type is deprecated](https://github.com/crohr/syslogger/pull/42) (thanks thesmart)