diff --git a/src/Filesystem.php b/src/Filesystem.php
index b98208ac4..4e9a984a3 100644
--- a/src/Filesystem.php
+++ b/src/Filesystem.php
@@ -19,7 +19,7 @@ class Filesystem implements FilesystemOperator
     public function __construct(
         FilesystemAdapter $adapter,
         array $config = [],
-        PathNormalizer $pathNormalizer = null
+        PathNormalizer $pathNormalizer = null,
     ) {
         $this->adapter = $adapter;
         $this->config = new Config($config);
@@ -163,6 +163,19 @@ public function publicUrl(string $path, array $config = []): string
         return $this->publicUrlGenerator->publicUrl($path, $config);
     }
 
+    private function resolvePublicUrlGenerator(): ?PublicUrlGenerator
+    {
+        if ($publicUrl = $this->config->get('public_url')) {
+            return new PrefixPublicUrlGenerator($publicUrl);
+        }
+
+        if ($this->adapter instanceof PublicUrlGenerator) {
+            return $this->adapter;
+        }
+
+        return null;
+    }
+
     /**
      * @param mixed $contents
      */
@@ -188,17 +201,4 @@ private function rewindStream($resource): void
             rewind($resource);
         }
     }
-
-    private function resolvePublicUrlGenerator(): ?PublicUrlGenerator
-    {
-        if ($publicUrl = $this->config->get('public_url')) {
-            return new PrefixPublicUrlGenerator($publicUrl);
-        }
-
-        if ($this->adapter instanceof PublicUrlGenerator) {
-            return $this->adapter;
-        }
-
-        return null;
-    }
 }
diff --git a/src/GoogleCloudStorage/GoogleCloudStorageAdapter.php b/src/GoogleCloudStorage/GoogleCloudStorageAdapter.php
index 4b28abf2c..d177d3ffd 100644
--- a/src/GoogleCloudStorage/GoogleCloudStorageAdapter.php
+++ b/src/GoogleCloudStorage/GoogleCloudStorageAdapter.php
@@ -23,6 +23,7 @@
 use League\Flysystem\UnableToRetrieveMetadata;
 use League\Flysystem\UnableToSetVisibility;
 use League\Flysystem\UnableToWriteFile;
+use League\Flysystem\UrlGeneration\PublicUrlGenerator;
 use League\Flysystem\Visibility;
 use League\MimeTypeDetection\FinfoMimeTypeDetector;
 use League\MimeTypeDetection\MimeTypeDetector;
@@ -34,7 +35,7 @@
 use function sprintf;
 use function strlen;
 
-class GoogleCloudStorageAdapter implements FilesystemAdapter
+class GoogleCloudStorageAdapter implements FilesystemAdapter, PublicUrlGenerator
 {
     /**
      * @var Bucket
@@ -75,6 +76,13 @@ public function __construct(
         $this->mimeTypeDetector = $mimeTypeDetector ?: new FinfoMimeTypeDetector();
     }
 
+    public function publicUrl(string $path, Config $config): string
+    {
+        $location = $this->prefixer->prefixPath($path);
+
+        return 'https://storage.googleapis.com/' . $this->bucket->name() . '/' . ltrim($location, '/');
+    }
+
     public function fileExists(string $path): bool
     {
         $prefixedPath = $this->prefixer->prefixPath($path);
diff --git a/src/GoogleCloudStorage/GoogleCloudStorageAdapterTest.php b/src/GoogleCloudStorage/GoogleCloudStorageAdapterTest.php
index de0893b18..96420abdc 100644
--- a/src/GoogleCloudStorage/GoogleCloudStorageAdapterTest.php
+++ b/src/GoogleCloudStorage/GoogleCloudStorageAdapterTest.php
@@ -13,6 +13,8 @@
 use League\Flysystem\UnableToRetrieveMetadata;
 use League\Flysystem\UnableToWriteFile;
 
+use function file_get_contents;
+
 /**
  * @group gcs
  */
@@ -161,4 +163,19 @@ public function failing_to_retrieve_visibility(): void
 
         $adapter->visibility('filename.txt');
     }
+
+    /**
+     * @test
+     */
+    public function generating_a_public_url(): void
+    {
+        /** @var GoogleCloudStorageAdapter $adapter */
+        $adapter = $this->adapter();
+        $adapter->write('some/path.txt', 'public contents', new Config(['visibility' => 'public']));
+
+        $url = $adapter->publicUrl('some/path.txt', new Config());
+        $contents = file_get_contents($url);
+
+        self::assertEquals('public contents', $contents);
+    }
 }