diff --git a/.github/workflows/pr-tests.yml b/.github/workflows/pr-tests.yml
index cd98835..a00b031 100644
--- a/.github/workflows/pr-tests.yml
+++ b/.github/workflows/pr-tests.yml
@@ -12,7 +12,7 @@ jobs:
       fail-fast: false
       matrix:
         os:
-          - macos-13
+          - macos-15
           - ubuntu-24.04
           - windows-2022
         node-version:
diff --git a/package-lock.json b/package-lock.json
index d9456c2..cb24611 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1542,9 +1542,9 @@
       }
     },
     "node_modules/flatted": {
-      "version": "3.3.3",
-      "resolved": "https://registry.npmjs.org/flatted/-/flatted-3.3.3.tgz",
-      "integrity": "sha512-GX+ysw4PBCz0PzosHDepZGANEuFCMLrnRTiEy9McGjmkCQYwRq4A/X786G/fjM/+OjsWSU1ZrY5qyARZmO/uwg==",
+      "version": "3.4.2",
+      "resolved": "https://registry.npmjs.org/flatted/-/flatted-3.4.2.tgz",
+      "integrity": "sha512-PjDse7RzhcPkIJwy5t7KPWQSZ9cAbzQXcafsetQoD7sOJRQlGikNbx7yZp2OotDnJyrDcbyRq3Ttb18iYOqkxA==",
       "dev": true,
       "license": "ISC"
     },