diff --git a/system-test/fixtures/sample/package.json b/system-test/fixtures/sample/package.json
index 1a2e039ef..0387c63b4 100644
--- a/system-test/fixtures/sample/package.json
+++ b/system-test/fixtures/sample/package.json
@@ -18,6 +18,6 @@
   "devDependencies": {
     "@types/node": "^22.0.0",
     "typescript": "^5.1.6",
-    "gts": "^5.0.0"
+    "gts": "^6.0.0"
   }
 }