diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 078e66d95..edb1d1b64 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-    ".": "2.3.1"
+    ".": "2.4.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index f75d9d050..69000bb7f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [2.4.0](https://github.com/googleapis/api-linter/compare/v2.3.1...v2.4.0) (2026-05-11)
+
+
+### Features
+
+* **AIP-190:** UpperCamelCase service, method and message names. ([#1623](https://github.com/googleapis/api-linter/issues/1623)) ([9c6635b](https://github.com/googleapis/api-linter/commit/9c6635b6cc1fdcadf6e498cc75e4ce3d541ce5af))
+
 ## [2.3.1](https://github.com/googleapis/api-linter/compare/v2.3.0...v2.3.1) (2026-03-17)
 
 
diff --git a/internal/version.go b/internal/version.go
index 580237499..53d8f1bdb 100644
--- a/internal/version.go
+++ b/internal/version.go
@@ -14,4 +14,4 @@
 package internal
 
 // Version is the current tagged release of the library.
-const Version = "2.3.1"
+const Version = "2.4.0"