diff --git a/action.yml b/action.yml
index 7f639d6..7e13c20 100644
--- a/action.yml
+++ b/action.yml
@@ -74,5 +74,5 @@ inputs:
     description: |
       **Deprecated** use `env.STACK_YAML` or `stack-arguments` instead.
 runs:
-  using: "node20"
+  using: "node24"
   main: "dist/index.js"
diff --git a/jest.config.ts b/jest.config.ts
index b0ac37e..4be9a06 100644
--- a/jest.config.ts
+++ b/jest.config.ts
@@ -1,8 +1,6 @@
 import { createDefaultPreset, type JestConfigWithTsJest } from "ts-jest";
 
-const presetConfig = createDefaultPreset({
-  isolatedModules: true,
-});
+const presetConfig = createDefaultPreset();
 
 const jestConfig: JestConfigWithTsJest = {
   ...presetConfig,
diff --git a/tsconfig.json b/tsconfig.json
index 3dfd4fe..9fe64bf 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -15,7 +15,8 @@
     "removeComments": true,
     "module": "NodeNext",
     "esModuleInterop": true,
-    "strict": true
+    "strict": true,
+    "isolatedModules": true
   },
   "include": ["./src/**/*"],
   "exclude": ["./src/**/*.test.ts"]