diff --git a/package.json b/package.json
index a8091f84d..7004ec51d 100644
--- a/package.json
+++ b/package.json
@@ -61,10 +61,11 @@
       "server"
     ],
     "transformIgnorePatterns": [
-      "node_modules/(?!(nanoid|@exodus/bytes|parse5)/)"
+      "node_modules/(?!(nanoid|@exodus/bytes|parse5|@asamuzakjp|@csstools)/)"
     ],
     "transform": {
-      "^.+\\.js$": "babel-jest"
+      "^.+\\.[jt]s$": "babel-jest",
+      "^.+\\.mjs$": "babel-jest"
     },
     "coveragePathIgnorePatterns": [
       "build/*"
@@ -151,7 +152,7 @@
     "globals": "^16.4.0",
     "jest": "^30.2.0",
     "jest-expect-message": "^1.1.3",
-    "jsdom": "^28.0.0",
+    "jsdom": "^28.1.0",
     "jsdom-global": "^3.0.2",
     "postcss-less": "^6.0.0",
     "stylelint": "^16.25.0",