diff --git a/src/fdc3/js/composeui-fdc3/package.json b/src/fdc3/js/composeui-fdc3/package.json
index 416299f21..af15678d5 100644
--- a/src/fdc3/js/composeui-fdc3/package.json
+++ b/src/fdc3/js/composeui-fdc3/package.json
@@ -39,6 +39,6 @@
     "ts-node": "10.9.2",
     "tslib": "2.8.1",
     "typescript": "5.9.3",
-    "vitest": "4.0.18"
+    "vitest": "4.1.0"
   }
 }
diff --git a/src/messaging/js/composeui-messaging-abstractions/package.json b/src/messaging/js/composeui-messaging-abstractions/package.json
index 27a737d1e..05e35f254 100644
--- a/src/messaging/js/composeui-messaging-abstractions/package.json
+++ b/src/messaging/js/composeui-messaging-abstractions/package.json
@@ -34,7 +34,7 @@
   "devDependencies": {
     "@types/node": "^24.5.2",
     "typescript": "5.9.3",
-    "vitest": "4.0.18",
+    "vitest": "4.1.0",
     "@vitest/coverage-v8": "4.0.18",
     "@rollup/plugin-node-resolve": "16.0.3",
     "@rollup/plugin-typescript": "12.3.0",
diff --git a/src/messaging/js/composeui-messaging-message-router/package.json b/src/messaging/js/composeui-messaging-message-router/package.json
index fe6387c0c..ed34413f9 100644
--- a/src/messaging/js/composeui-messaging-message-router/package.json
+++ b/src/messaging/js/composeui-messaging-message-router/package.json
@@ -33,7 +33,7 @@
     "@types/node": "^24.5.2",
     "tslib": "2.8.1",
     "typescript": "5.9.3",
-    "vitest": "4.0.18",
+    "vitest": "4.1.0",
     "@rollup/plugin-commonjs": "29.0.2",
     "@rollup/plugin-node-resolve": "16.0.3",
     "rollup": "4.60.4",