diff --git a/CHANGELOG.md b/CHANGELOG.md
index 614bf7ac..f68c8882 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [4.2.2] - 2022-11-20
+### Fixed
+- Performance issues with large value files
+
 ## [4.2.1] - 2022-11-14
 ### Fixed
 - fixes detection of SOPS YAML files with Windows line-endings (CR LF)
@@ -257,7 +261,8 @@ Started a fork of https://github.com/zendesk/helm-secrets
 - Verbose output is now on stderr
 - Support all helm sub commands and plugins
 
-[Unreleased]: https://github.com/kroepke/helm-secrets/compare/v4.2.1...HEAD
+[Unreleased]: https://github.com/kroepke/helm-secrets/compare/v4.2.2...HEAD
+[4.2.2]: https://github.com/jkroepke/helm-secrets/compare/v4.2.1...v4.2.2
 [4.2.1]: https://github.com/jkroepke/helm-secrets/compare/v4.2.0...v4.2.1
 [4.2.0]: https://github.com/jkroepke/helm-secrets/compare/v4.1.1...v4.2.0
 [4.1.1]: https://github.com/jkroepke/helm-secrets/compare/v4.1.0...v4.1.1
diff --git a/scripts/backends/sops.sh b/scripts/backends/sops.sh
index f11a4ed1..1bca11f6 100644
--- a/scripts/backends/sops.sh
+++ b/scripts/backends/sops.sh
@@ -13,9 +13,7 @@ backend_is_file_encrypted() {
 }
 
 backend_is_encrypted() {
-    stdin=$(cat -)
-
-    [ "${stdin#*sops}" != "$stdin" ] && [ "${stdin#*mac}" != "$stdin" ] && [ "${stdin#*version}" != "$stdin" ]
+    grep -q 'mac.*,type:str]' -
 }
 
 backend_encrypt_file() {