diff --git a/composer.json b/composer.json
index c63365de..ae59e960 100644
--- a/composer.json
+++ b/composer.json
@@ -27,6 +27,7 @@
         "phpstan/phpstan-deprecation-rules": "^0.12",
         "phpstan/phpstan-phpunit": "^0.12",
         "phpunit/phpunit": "^9.3",
+        "psr/http-message": "^1.0",
         "respect/coding-standard": "^3.0",
         "squizlabs/php_codesniffer": "^3.5",
         "symfony/validator": "^3.0||^4.0",
diff --git a/docs/rules/Readable.md b/docs/rules/Readable.md
index ee239592..53d88da3 100644
--- a/docs/rules/Readable.md
+++ b/docs/rules/Readable.md
@@ -16,6 +16,7 @@ v::readable()->validate('file.txt'); // true
 
 Version | Description
 --------|-------------
+  2.1.0 | Add PSR-7 support
   0.5.0 | Created
 
 ***
diff --git a/docs/rules/Size.md b/docs/rules/Size.md
index ff876625..db325d66 100644
--- a/docs/rules/Size.md
+++ b/docs/rules/Size.md
@@ -40,6 +40,7 @@ Message template for this validator includes `{{minSize}}` and `{{maxSize}}`.
 
 Version | Description
 --------|-------------
+  2.1.0 | Add PSR-7 support
   1.0.0 | Created
 
 ***
diff --git a/docs/rules/Uploaded.md b/docs/rules/Uploaded.md
index 8be5e8d1..59766275 100644
--- a/docs/rules/Uploaded.md
+++ b/docs/rules/Uploaded.md
@@ -16,6 +16,7 @@ v::uploaded()->validate('/path/of/an/uploaded/file'); // true
 
 Version | Description
 --------|-------------
+  2.1.0 | Add PSR-7 support
   0.5.0 | Created
 
 ***
diff --git a/docs/rules/Writable.md b/docs/rules/Writable.md
index d0d0fb22..1e987c50 100644
--- a/docs/rules/Writable.md
+++ b/docs/rules/Writable.md
@@ -16,6 +16,7 @@ v::writable()->validate('file.txt'); // true
 
 Version | Description
 --------|-------------
+  2.1.0 | Add PSR-7 support
   0.5.0 | Created
 
 ***
diff --git a/library/Rules/Readable.php b/library/Rules/Readable.php
index f9d48687..89e1e98b 100644
--- a/library/Rules/Readable.php
+++ b/library/Rules/Readable.php
@@ -13,6 +13,7 @@ declare(strict_types=1);
 
 namespace Respect\Validation\Rules;
 
+use Psr\Http\Message\StreamInterface;
 use SplFileInfo;
 
 use function is_readable;
@@ -35,6 +36,10 @@ final class Readable extends AbstractRule
             return $input->isReadable();
         }
 
+        if ($input instanceof StreamInterface) {
+            return $input->isReadable();
+        }
+
         return is_string($input) && is_readable($input);
     }
 }
diff --git a/library/Rules/Size.php b/library/Rules/Size.php
index 20f07e09..e2900eb2 100644
--- a/library/Rules/Size.php
+++ b/library/Rules/Size.php
@@ -13,6 +13,8 @@ declare(strict_types=1);
 
 namespace Respect\Validation\Rules;
 
+use Psr\Http\Message\StreamInterface;
+use Psr\Http\Message\UploadedFileInterface;
 use Respect\Validation\Exceptions\ComponentException;
 use SplFileInfo;
 
@@ -27,6 +29,7 @@ use function sprintf;
  *
  * @author Danilo Correa <danilosilva87@gmail.com>
  * @author Henrique Moody <henriquemoody@gmail.com>
+ * @author Felipe Stival <v0idpwn@gmail.com>
  */
 final class Size extends AbstractRule
 {
@@ -71,6 +74,14 @@ final class Size extends AbstractRule
             return $this->isValidSize($input->getSize());
         }
 
+        if ($input instanceof UploadedFileInterface) {
+            return $this->isValidSize($input->getSize());
+        }
+
+        if ($input instanceof StreamInterface) {
+            return $this->isValidSize($input->getSize());
+        }
+
         if (is_string($input)) {
             return $this->isValidSize((int) filesize($input));
         }
diff --git a/library/Rules/Uploaded.php b/library/Rules/Uploaded.php
index a9b0fd0b..d2deeb28 100644
--- a/library/Rules/Uploaded.php
+++ b/library/Rules/Uploaded.php
@@ -13,6 +13,7 @@ declare(strict_types=1);
 
 namespace Respect\Validation\Rules;
 
+use Psr\Http\Message\UploadedFileInterface;
 use SplFileInfo;
 
 use function is_scalar;
@@ -35,6 +36,10 @@ final class Uploaded extends AbstractRule
             return $this->validate($input->getPathname());
         }
 
+        if ($input instanceof UploadedFileInterface) {
+            return true;
+        }
+
         if (!is_scalar($input)) {
             return false;
         }
diff --git a/library/Rules/Writable.php b/library/Rules/Writable.php
index ae84deaf..ea313a59 100644
--- a/library/Rules/Writable.php
+++ b/library/Rules/Writable.php
@@ -13,6 +13,7 @@ declare(strict_types=1);
 
 namespace Respect\Validation\Rules;
 
+use Psr\Http\Message\StreamInterface;
 use SplFileInfo;
 
 use function is_string;
@@ -35,6 +36,10 @@ final class Writable extends AbstractRule
             return $input->isWritable();
         }
 
+        if ($input instanceof StreamInterface) {
+            return $input->isWritable();
+        }
+
         return is_string($input) && is_writable($input);
     }
 }
diff --git a/tests/unit/Rules/ReadableTest.php b/tests/unit/Rules/ReadableTest.php
index db66af51..645d319b 100644
--- a/tests/unit/Rules/ReadableTest.php
+++ b/tests/unit/Rules/ReadableTest.php
@@ -13,6 +13,7 @@ declare(strict_types=1);
 
 namespace Respect\Validation\Rules;
 
+use Psr\Http\Message\StreamInterface;
 use Respect\Validation\Test\RuleTestCase;
 use SplFileInfo;
 use stdClass;
@@ -38,6 +39,7 @@ final class ReadableTest extends RuleTestCase
         return [
             [$rule, $file],
             [$rule, new SplFileInfo($file)],
+            [$rule, $this->createPsr7Stream(true)],
         ];
     }
 
@@ -53,6 +55,15 @@ final class ReadableTest extends RuleTestCase
             [$rule, $file],
             [$rule, new SplFileInfo($file)],
             [$rule, new stdClass()],
+            [$rule, $this->createPsr7Stream(false)],
         ];
     }
+
+    private function createPsr7Stream(bool $isReadable): StreamInterface
+    {
+        $stream = $this->createMock(StreamInterface::class);
+        $stream->expects(self::any())->method('isReadable')->willReturn($isReadable);
+
+        return $stream;
+    }
 }
diff --git a/tests/unit/Rules/SizeTest.php b/tests/unit/Rules/SizeTest.php
index ab4270a9..eaaeacd8 100644
--- a/tests/unit/Rules/SizeTest.php
+++ b/tests/unit/Rules/SizeTest.php
@@ -15,6 +15,7 @@ namespace Respect\Validation\Rules;
 
 use org\bovigo\vfs\content\LargeFileContent;
 use org\bovigo\vfs\vfsStream;
+use Psr\Http\Message\StreamInterface;
 use Respect\Validation\Exceptions\ComponentException;
 use Respect\Validation\Test\RuleTestCase;
 use SplFileInfo;
@@ -71,6 +72,9 @@ final class SizeTest extends RuleTestCase
             ->withContent(LargeFileContent::withMegabytes(2))
             ->at($root);
 
+        $psr7Stream1Mb = $this->createMock(StreamInterface::class);
+        $psr7Stream1Mb->expects(self::once())->method('getSize')->willReturn(1024);
+
         return [
             'file with at least 3kb' => [new Size('3kb', null), $file2Kb->url()],
             'file with up to 1kb' => [new Size(null, '1kb'), $file2Kb->url()],
@@ -81,6 +85,7 @@ final class SizeTest extends RuleTestCase
             'file between 1pb and 3pb' => [new Size('1pb', '3pb'), $file2Mb->url()],
             'SplFileInfo instancia' => [new Size('1pb', '3pb'), new SplFileInfo($file2Mb->url())],
             'parameter invalid' => [new Size('1pb', '3pb'), []],
+            'PSR-7 stream' => [new Size('1MB', '1.1MB'), $psr7Stream1Mb],
         ];
     }
 
diff --git a/tests/unit/Rules/UploadedTest.php b/tests/unit/Rules/UploadedTest.php
index 34c66b1a..d4de0de2 100644
--- a/tests/unit/Rules/UploadedTest.php
+++ b/tests/unit/Rules/UploadedTest.php
@@ -14,6 +14,7 @@ declare(strict_types=1);
 namespace Respect\Validation\Rules;
 
 use PHPUnit\Framework\SkippedTestError;
+use Psr\Http\Message\UploadedFileInterface;
 use Respect\Validation\Test\RuleTestCase;
 use SplFileInfo;
 use stdClass;
@@ -44,6 +45,7 @@ final class UploadedTest extends RuleTestCase
         return [
             [$rule, self::UPLOADED_FILENAME],
             [$rule, new SplFileInfo(self::UPLOADED_FILENAME)],
+            [$rule, $this->createMock(UploadedFileInterface::class)],
         ];
     }
 
diff --git a/tests/unit/Rules/WritableTest.php b/tests/unit/Rules/WritableTest.php
index d7a6512c..0985f097 100644
--- a/tests/unit/Rules/WritableTest.php
+++ b/tests/unit/Rules/WritableTest.php
@@ -13,6 +13,7 @@ declare(strict_types=1);
 
 namespace Respect\Validation\Rules;
 
+use Psr\Http\Message\StreamInterface;
 use Respect\Validation\Test\RuleTestCase;
 use SplFileInfo;
 use SplFileObject;
@@ -44,6 +45,7 @@ final class WritableTest extends RuleTestCase
             'writable directory' => [$sut, $this->getFixtureDirectory()],
             'writable SplFileInfo file' => [$sut, new SplFileInfo($filename)],
             'writable SplFileObject file' => [$sut, new SplFileObject($filename)],
+            'writable PSR-7 stream' => [$sut, $this->createPsr7Stream(true)],
         ];
     }
 
@@ -58,6 +60,7 @@ final class WritableTest extends RuleTestCase
         $this->changeFileModeToUnwritable($filename);
 
         return [
+            'unwritable PSR-7 stream' => [$rule, $this->createPsr7Stream(false)],
             'unwritable filename' => [$rule, $filename],
             'unwritable SplFileInfo file' => [$rule, new SplFileInfo($filename)],
             'unwritable SplFileObject file' => [$rule, new SplFileObject($filename)],
@@ -72,6 +75,14 @@ final class WritableTest extends RuleTestCase
         ];
     }
 
+    private function createPsr7Stream(bool $isWritable): StreamInterface
+    {
+        $stream = $this->createMock(StreamInterface::class);
+        $stream->expects(self::any())->method('isWritable')->willReturn($isWritable);
+
+        return $stream;
+    }
+
     private function changeFileModeToUnwritable(string $filename): void
     {
         chmod($filename, 0555);