diff --git a/CHANGELOG.md b/CHANGELOG.md
index 72373986..f3f44b64 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,18 @@
 # Changelog
 
+## [6.4.0](https://github.com/googleapis/gaxios/compare/v6.3.0...v6.4.0) (2024-04-03)
+
+
+### Features
+
+* Enhance Error Redaction ([#609](https://github.com/googleapis/gaxios/issues/609)) ([b1d2875](https://github.com/googleapis/gaxios/commit/b1d28759110f91b37746f9b88aba92bf52df2fcc))
+* Support multipart/related requests ([#610](https://github.com/googleapis/gaxios/issues/610)) ([086c824](https://github.com/googleapis/gaxios/commit/086c8240652bd893dff0dd4c097ef00f5777564e))
+
+
+### Bug Fixes
+
+* Error Redactor Case-Insensitive Matching ([#613](https://github.com/googleapis/gaxios/issues/613)) ([05e65ef](https://github.com/googleapis/gaxios/commit/05e65efda6d13e760d4f7f87be7d6cebeba3cc64))
+
 ## [6.3.0](https://github.com/googleapis/gaxios/compare/v6.2.0...v6.3.0) (2024-02-01)
 
 
diff --git a/package.json b/package.json
index 0a315022..313fdc6d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "gaxios",
-  "version": "6.3.0",
+  "version": "6.4.0",
   "description": "A simple common HTTP client specifically for Google APIs and services.",
   "main": "build/src/index.js",
   "types": "build/src/index.d.ts",
diff --git a/samples/package.json b/samples/package.json
index 52c0ba40..c7471827 100644
--- a/samples/package.json
+++ b/samples/package.json
@@ -9,7 +9,7 @@
   },
   "license": "Apache-2.0",
   "dependencies": {
-    "gaxios": "^6.3.0"
+    "gaxios": "^6.4.0"
   },
   "devDependencies": {
     "mocha": "^8.0.0"