diff --git a/CHANGELOG.md b/CHANGELOG.md
index 191a66d9..28d47674 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,11 @@
+# 4.0.4 (March 3rd, 2024)
+
+Bugfixes:
+- Better integration for EncapsulatedHelper when needing params/request info (@henrique-ft, #721 and #723)
+
+Misc:
+- Make specs compatible with newer Rack versions (@andrehjr,  #722)
+
 # 4.0.3 (November 15th, 2023)
 
 Bugfixes:
diff --git a/lib/split/version.rb b/lib/split/version.rb
index 44c30f50..92b64adf 100644
--- a/lib/split/version.rb
+++ b/lib/split/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Split
-  VERSION = "4.0.3"
+  VERSION = "4.0.4"
 end