diff --git a/CHANGELOG.md b/CHANGELOG.md
index 082ec42..68736b9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### dependabot: \#90 Bump flatted from 3.3.3 to 3.4.1
+
 ## [2.2.0] - 2025-10-02
 
 ### Added
diff --git a/yarn.lock b/yarn.lock
index a8b93d6..95b5f96 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3379,9 +3379,9 @@ flat-cache@^4.0.0:
     keyv "^4.5.4"
 
 flatted@^3.2.9:
-  version "3.3.3"
-  resolved "https://registry.yarnpkg.com/flatted/-/flatted-3.3.3.tgz#67c8fad95454a7c7abebf74bb78ee74a44023358"
-  integrity sha512-GX+ysw4PBCz0PzosHDepZGANEuFCMLrnRTiEy9McGjmkCQYwRq4A/X786G/fjM/+OjsWSU1ZrY5qyARZmO/uwg==
+  version "3.4.1"
+  resolved "https://registry.yarnpkg.com/flatted/-/flatted-3.4.1.tgz#84ccd9579e76e9cc0d246c11d8be0beb019143e6"
+  integrity sha512-IxfVbRFVlV8V/yRaGzk0UVIcsKKHMSfYw66T/u4nTwlWteQePsxe//LjudR1AMX4tZW3WFCh3Zqa/sjlqpbURQ==
 
 for-each@^0.3.3, for-each@^0.3.5:
   version "0.3.5"