diff --git a/src/Github/Api/V3/CreatePullRequestThroughApiCall.php b/src/Github/Api/V3/CreatePullRequestThroughApiCall.php
index a3249370..ced40152 100644
--- a/src/Github/Api/V3/CreatePullRequestThroughApiCall.php
+++ b/src/Github/Api/V3/CreatePullRequestThroughApiCall.php
@@ -48,7 +48,7 @@ public function __invoke(
             )
             ->withAddedHeader('Content-Type', 'application/json')
             ->withAddedHeader('User-Agent', 'Ocramius\'s minimal API V3 client')
-            ->withAddedHeader('Authorization', 'bearer ' . $this->apiToken);
+            ->withAddedHeader('Authorization', 'token ' . $this->apiToken);
 
         $request
             ->getBody()
diff --git a/src/Github/Api/V3/CreateReleaseThroughApiCall.php b/src/Github/Api/V3/CreateReleaseThroughApiCall.php
index a43abb8a..071da577 100644
--- a/src/Github/Api/V3/CreateReleaseThroughApiCall.php
+++ b/src/Github/Api/V3/CreateReleaseThroughApiCall.php
@@ -49,7 +49,7 @@ public function __invoke(
             )
             ->withAddedHeader('Content-Type', 'application/json')
             ->withAddedHeader('User-Agent', 'Ocramius\'s minimal API V3 client')
-            ->withAddedHeader('Authorization', 'bearer ' . $this->apiToken);
+            ->withAddedHeader('Authorization', 'token ' . $this->apiToken);
 
         $request
             ->getBody()
diff --git a/src/Github/Api/V3/SetDefaultBranchThroughApiCall.php b/src/Github/Api/V3/SetDefaultBranchThroughApiCall.php
index 63937a6e..97255dff 100644
--- a/src/Github/Api/V3/SetDefaultBranchThroughApiCall.php
+++ b/src/Github/Api/V3/SetDefaultBranchThroughApiCall.php
@@ -45,7 +45,7 @@ public function __invoke(
             )
             ->withAddedHeader('Content-Type', 'application/json')
             ->withAddedHeader('User-Agent', 'Ocramius\'s minimal API V3 client')
-            ->withAddedHeader('Authorization', 'bearer ' . $this->apiToken);
+            ->withAddedHeader('Authorization', 'token ' . $this->apiToken);
 
         $request
             ->getBody()
diff --git a/test/unit/Github/Api/V3/CreatePullRequestTest.php b/test/unit/Github/Api/V3/CreatePullRequestTest.php
index a52451f3..138b6ad6 100644
--- a/test/unit/Github/Api/V3/CreatePullRequestTest.php
+++ b/test/unit/Github/Api/V3/CreatePullRequestTest.php
@@ -76,7 +76,7 @@ public function testSuccessfulRequest(): void
                         'Host'          => ['the-domain.com'],
                         'Content-Type'  => ['application/json'],
                         'User-Agent'    => ['Ocramius\'s minimal API V3 client'],
-                        'Authorization' => ['bearer ' . $this->apiToken],
+                        'Authorization' => ['token ' . $this->apiToken],
                     ],
                     $request->getHeaders()
                 );
diff --git a/test/unit/Github/Api/V3/CreateReleaseTest.php b/test/unit/Github/Api/V3/CreateReleaseTest.php
index 0c636b92..f3f60d9d 100644
--- a/test/unit/Github/Api/V3/CreateReleaseTest.php
+++ b/test/unit/Github/Api/V3/CreateReleaseTest.php
@@ -74,7 +74,7 @@ public function testSuccessfulRequest(): void
                         'Host'          => ['the-domain.com'],
                         'Content-Type'  => ['application/json'],
                         'User-Agent'    => ['Ocramius\'s minimal API V3 client'],
-                        'Authorization' => ['bearer ' . $this->apiToken],
+                        'Authorization' => ['token ' . $this->apiToken],
                     ],
                     $request->getHeaders()
                 );
diff --git a/test/unit/Github/Api/V3/SetDefaultBranchThroughApiCallTest.php b/test/unit/Github/Api/V3/SetDefaultBranchThroughApiCallTest.php
index 5d0247d0..e5a79950 100644
--- a/test/unit/Github/Api/V3/SetDefaultBranchThroughApiCallTest.php
+++ b/test/unit/Github/Api/V3/SetDefaultBranchThroughApiCallTest.php
@@ -72,7 +72,7 @@ public function testSuccessfulRequest(): void
                         'Host'          => ['the-domain.com'],
                         'Content-Type'  => ['application/json'],
                         'User-Agent'    => ['Ocramius\'s minimal API V3 client'],
-                        'Authorization' => ['bearer ' . $this->apiToken],
+                        'Authorization' => ['token ' . $this->apiToken],
                     ],
                     $request->getHeaders()
                 );
@@ -117,7 +117,7 @@ public function testRequestFailedToSwitchBranch(): void
                         'Host'          => ['the-domain.com'],
                         'Content-Type'  => ['application/json'],
                         'User-Agent'    => ['Ocramius\'s minimal API V3 client'],
-                        'Authorization' => ['bearer ' . $this->apiToken],
+                        'Authorization' => ['token ' . $this->apiToken],
                     ],
                     $request->getHeaders()
                 );