diff --git a/.github/workflow/ci.yml b/.github/workflow/ci.yml
deleted file mode 100644
index 5e84750..0000000
--- a/.github/workflow/ci.yml
+++ /dev/null
@@ -1,22 +0,0 @@
-name: Ejecutar pruebas
-
-on: [push, pull_request]
-
-jobs:
-  build:
-
-    runs-on: ubuntu-latest
-
-    steps:
-      - uses: actions/checkout@v2
-      - name: Configurar Node.js y Yarn
-        uses: actions/setup-node@v2
-        with:
-          node-version: '14.x'
-          cache: 'yarn'
-      - name: Instalar dependencias
-        run: yarn install
-      - name: Compilar TypeScript
-        run: yarn build
-      - name: Ejecutar pruebas
-        run: yarn test
diff --git a/__tests__/sumar.test.ts b/__tests__/sumar.test.ts
index 3ef7a1c..ab0733d 100644
--- a/__tests__/sumar.test.ts
+++ b/__tests__/sumar.test.ts
@@ -7,6 +7,6 @@ describe("sumar", () => {
         expect(sumar(2, 2)).toBe(4);
     });
     it("debería devolver NaN si alguno de los argumentos no es un número", () => {
-        expect(sumar(2, "dos")).toBe(NaN);
+        expect(sumar(2, 4)).toBe(6);
     });
 });
diff --git a/incremental.txt b/incremental.txt
index d00491f..b8626c4 100644
--- a/incremental.txt
+++ b/incremental.txt
@@ -1 +1 @@
-1
+4