diff --git a/src/Methods/Eth/GetTransactionCount.php b/src/Methods/Eth/GetTransactionCount.php
index 6c16d7c..468e078 100644
--- a/src/Methods/Eth/GetTransactionCount.php
+++ b/src/Methods/Eth/GetTransactionCount.php
@@ -18,6 +18,7 @@ use Web3\Validators\QuantityValidator;
 use Web3\Validators\AddressValidator;
 use Web3\Formatters\AddressFormatter;
 use Web3\Formatters\OptionalQuantityFormatter;
+use Web3\Formatters\BigNumberFormatter;
 
 class GetTransactionCount extends EthMethod
 {
@@ -46,7 +47,9 @@ class GetTransactionCount extends EthMethod
      * 
      * @var array
      */
-    protected $outputFormatters = [];
+    protected $outputFormatters = [
+        BigNumberFormatter::class
+    ];
 
     /**
      * defaultValues
diff --git a/test/unit/EthApiTest.php b/test/unit/EthApiTest.php
index a017c3b..ad8cd81 100644
--- a/test/unit/EthApiTest.php
+++ b/test/unit/EthApiTest.php
@@ -190,7 +190,7 @@ class EthApiTest extends TestCase
     {
         $eth = $this->eth;
 
-        $eth->getStorageAt('0x407d73d8a49eeb85d32cf465507dd71d507100c1', '0x0', function ($err, $storage) {
+        $eth->getStorageAt('0x561a2aa10f9a8589c93665554c871106342f70af', '0x0', function ($err, $storage) {
             if ($err !== null) {
                 return $this->fail($err->getMessage());
             }
@@ -207,11 +207,11 @@ class EthApiTest extends TestCase
     {
         $eth = $this->eth;
 
-        $eth->getTransactionCount('0x407d73d8a49eeb85d32cf465507dd71d507100c1', function ($err, $transactionCount) {
+        $eth->getTransactionCount('0x561a2aa10f9a8589c93665554c871106342f70af', function ($err, $transactionCount) {
             if ($err !== null) {
                 return $this->fail($err->getMessage());
             }
-            $this->assertTrue(is_string($transactionCount));
+            $this->assertTrue(is_numeric($transactionCount->toString()));
         });
     }