diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index f40401d48..64e9d71ad 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,5 +1,5 @@
 {
   ".release-please-manifest.json": "4.0.2",
   "package.json": "4.0.2",
-  ".": "4.2.0"
+  ".": "4.2.1"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index fc5a3f675..0c2234f62 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,14 @@
 
 All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
 
+## [4.2.1](https://github.com/aws-actions/configure-aws-credentials/compare/v4.2.0...v4.2.1) (2025-05-14)
+
+
+### Bug Fixes
+
+* ensure explicit inputs take precedence over environment variables ([e56e6c4](https://github.com/aws-actions/configure-aws-credentials/commit/e56e6c4038915cd5a7238a671fe97f44c98a40b0))
+* prioritize explicit inputs over environment variables ([df9c8fe](https://github.com/aws-actions/configure-aws-credentials/commit/df9c8fed6b364f0d1fb0e6e03a0ec26f1ea4e3fc))
+
 ## [4.2.0](https://github.com/aws-actions/configure-aws-credentials/compare/v4.1.0...v4.2.0) (2025-05-06)
 
 
diff --git a/package-lock.json b/package-lock.json
index ab1a71bfd..b0a5a4055 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "configure-aws-credentials",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "configure-aws-credentials",
-      "version": "4.2.0",
+      "version": "4.2.1",
       "license": "MIT",
       "dependencies": {
         "@actions/core": "^1.11.1",
diff --git a/package.json b/package.json
index b618cc284..dd39e0075 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "configure-aws-credentials",
   "description": "A GitHub Action to configure AWS credentials",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "scripts": {
     "build": "tsc",
     "lint": "biome check --error-on-warnings ./src",