diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5ebe49f..331176f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 ## Unreleased
 
+## 2.2.2 (2024-11-21)
+* make content-type lookup case-insensitive #178
+
 ## 2.2.1 (2024-10-23)
 * revert schemas validation in additionalProperties and remove additionalProperties logic from allof (breaking things for me, will revisit)
 
diff --git a/lib/openapi_parser/version.rb b/lib/openapi_parser/version.rb
index 538f8b4..5bd5cdb 100644
--- a/lib/openapi_parser/version.rb
+++ b/lib/openapi_parser/version.rb
@@ -1,3 +1,3 @@
 module OpenAPIParser
-  VERSION = '2.2.1'.freeze
+  VERSION = '2.2.2'.freeze
 end