diff --git a/04-fibonacci/index.js b/04-fibonacci/index.js
index 37c64cc..357ed12 100644
--- a/04-fibonacci/index.js
+++ b/04-fibonacci/index.js
@@ -1,4 +1,8 @@
 export function fibonacci(value) {
   // implementar logica aqui
-  
+  const fibo = [0, 1]
+  for (let i = 2; i <= value; i++) {
+      fibo[i] = fibo[i-1] + fibo[i-2]
+  }
+  return fibo[value]
 }
\ No newline at end of file