diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6862e4fe33..934be31487 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,20 @@
 
 ### Bug fixes
 
+# 2.1.6 (2 Nov 2023)
+
+### Breaking Changes
+
+- The parser cache is now opt-in. Add `config.graphql.parser_cache = true` to your Rails environment setup to enable it. #4648
+
+### New features
+
+- New `ISO8691Duration`` scalar #4688
+
+### Bug fixes
+
+- Trace: fix custom trace mode inheritance #4693
+
 # 2.1.5 (25 Oct 2023)
 
 ### Bug fixes
diff --git a/lib/graphql/version.rb b/lib/graphql/version.rb
index 28bee38029..729d2e0379 100644
--- a/lib/graphql/version.rb
+++ b/lib/graphql/version.rb
@@ -1,4 +1,4 @@
 # frozen_string_literal: true
 module GraphQL
-  VERSION = "2.1.5"
+  VERSION = "2.1.6"
 end