diff --git a/CHANGELOG.md b/CHANGELOG.md
index 808062f9..19cbbba8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,7 @@ using the [Keep a CHANGELOG](http://keepachangelog.com) principles.
 
 - [Application version strategy](https://github.com/llaville/php-compat-info/issues/267) : `composer/package-versions-deprecated` is used to handle version in Composer/Git strategy
 - uses `AnonymousClassSniff` to enhance PHP 7 detection - (see also [GH-269](https://github.com/llaville/php-compat-info/issues/269))
+- uses `ReturnTypeDeclarationSniff` to enhance PHP 7 detection - (see also [GH-233](https://github.com/llaville/php-compat-info/issues/233). Thanks to @CybotTM)
 
 ### Removed
 
diff --git a/src/Bartlett/CompatInfo/Analyser/CompatibilityAnalyser.php b/src/Bartlett/CompatInfo/Analyser/CompatibilityAnalyser.php
index 57a03806..5d879c98 100644
--- a/src/Bartlett/CompatInfo/Analyser/CompatibilityAnalyser.php
+++ b/src/Bartlett/CompatInfo/Analyser/CompatibilityAnalyser.php
@@ -13,6 +13,7 @@
 
 use Bartlett\CompatInfo\Sniffs\PHP\AnonymousClassSniff;
 use Bartlett\CompatInfo\Sniffs\PHP\DeclareSniff;
+use Bartlett\CompatInfo\Sniffs\PHP\ReturnTypeDeclarationSniff;
 use Bartlett\CompatInfo\Util\Database;
 use Bartlett\CompatInfo\Collection\ReferenceCollection;
 use Bartlett\CompatInfo\PhpParser\ConditionalCodeNodeProcessor;
@@ -76,6 +77,7 @@ public function __construct()
         $this->sniffs = [
             new DeclareSniff(),
             new AnonymousClassSniff(),
+            new ReturnTypeDeclarationSniff(),
         ];
     }
 
diff --git a/src/Bartlett/CompatInfo/Sniffs/PHP/ReturnTypeDeclarationSniff.php b/src/Bartlett/CompatInfo/Sniffs/PHP/ReturnTypeDeclarationSniff.php
index 20fdbf53..686caadc 100644
--- a/src/Bartlett/CompatInfo/Sniffs/PHP/ReturnTypeDeclarationSniff.php
+++ b/src/Bartlett/CompatInfo/Sniffs/PHP/ReturnTypeDeclarationSniff.php
@@ -10,6 +10,7 @@
  * Return Type Declarations since PHP 7.0.0 alpha1
  *
  * @link https://wiki.php.net/rfc/return_types
+ * @link https://www.php.net/manual/en/migration70.new-features.php#migration70.new-features.return-type-declarations
  */
 class ReturnTypeDeclarationSniff extends SniffAbstract
 {
@@ -18,8 +19,7 @@ class ReturnTypeDeclarationSniff extends SniffAbstract
     public function enterSniff(): void
     {
         parent::enterSniff();
-
-        $this->returnTypeDeclaration = array();
+        $this->returnTypeDeclaration = [];
     }
 
     public function leaveSniff(): void
@@ -27,9 +27,9 @@ public function leaveSniff(): void
         parent::leaveSniff();
 
         if (!empty($this->returnTypeDeclaration)) {
-            // inform analyser that few sniffs were found
+            // inform analyser that some sniffs were found
             $this->visitor->setMetrics(
-                array(Metrics::RETURN_TYPE_DECLARATION => $this->returnTypeDeclaration)
+                [ReturnTypeDeclarationSniff::class => $this->returnTypeDeclaration]
             );
         }
     }
@@ -47,11 +47,11 @@ public function enterNode(Node $node): void
             if (empty($this->returnTypeDeclaration)) {
                 $version = '7.0.0alpha1';
 
-                $this->returnTypeDeclaration[$name] = array(
+                $this->returnTypeDeclaration[$name] = [
                     'severity' => $this->getCurrentSeverity($version),
                     'version'  => $version,
-                    'spots'    => array()
-                );
+                    'spots'    => [],
+                ];
             }
 
             $this->returnTypeDeclaration[$name]['spots'][] = $this->getCurrentSpot($node);
diff --git a/tests/ReturnTypeDeclarationSniffTest.php b/tests/ReturnTypeDeclarationSniffTest.php
new file mode 100644
index 00000000..b8144e99
--- /dev/null
+++ b/tests/ReturnTypeDeclarationSniffTest.php
@@ -0,0 +1,75 @@
+<?php
+/**
+ * Unit tests for PHP_CompatInfo package, return type declaration sniff
+ *
+ * PHP version 7
+ *
+ * @category   PHP
+ * @package    PHP_CompatInfo
+ * @subpackage Tests
+ * @author     Laurent Laville <pear@laurent-laville.org>
+ * @license    https://opensource.org/licenses/BSD-3-Clause The 3-Clause BSD License
+ * @since      Class available since Release 5.4.0
+ */
+
+namespace Bartlett\Tests\CompatInfo;
+
+use Bartlett\CompatInfo\Analyser\CompatibilityAnalyser;
+use Bartlett\Reflect\Client;
+
+/**
+ * @link https://wiki.php.net/rfc/return_types
+ * @link https://www.php.net/manual/en/migration70.new-features.php#migration70.new-features.return-type-declarations
+ */
+class ReturnTypeDeclarationSniffTest extends \PHPUnit\Framework\TestCase
+{
+    protected static $fixtures;
+    protected static $analyserId;
+    protected static $api;
+
+    /**
+     * Sets up the shared fixture.
+     *
+     * @return void
+     */
+    public static function setUpBeforeClass(): void
+    {
+        self::$fixtures = __DIR__ . DIRECTORY_SEPARATOR
+            . 'fixtures' . DIRECTORY_SEPARATOR
+            . 'sniffs' . DIRECTORY_SEPARATOR
+        ;
+
+        self::$analyserId = CompatibilityAnalyser::class;
+
+        $client = new Client();
+
+        // request for a Bartlett\Reflect\Api\Analyser
+        self::$api = $client->api('analyser');
+    }
+
+    /**
+     * Regression test for return type hint declaration detection GH#233
+     *
+     * @link https://github.com/llaville/php-compat-info/issues/233
+     *       PHP 7 requirement not detected for return type hint
+     * @group features
+     * @group regression
+     * @return void
+     */
+    public function testReturnTypeHint()
+    {
+        $dataSource = self::$fixtures . 'return_types.php';
+        $analysers  = ['compatibility'];
+        $metrics    = self::$api->run($dataSource, $analysers);
+        $versions   = $metrics[self::$analyserId]['versions'];
+
+        $this->assertEquals(
+            [
+                'php.min'      => '7.0.0alpha1',
+                'php.max'      => '',
+                'php.all'      => '7.0.0alpha1',
+            ],
+            $versions
+        );
+    }
+}
diff --git a/tests/fixtures/sniffs/return_types.php b/tests/fixtures/sniffs/return_types.php
index 2bd07438..f991194a 100644
--- a/tests/fixtures/sniffs/return_types.php
+++ b/tests/fixtures/sniffs/return_types.php
@@ -9,10 +9,15 @@ static function make(): B { // must exactly match parent; this will error
     }
 }
 
-function foo(): DateTime { 
+function foo(): DateTime {
     return null; // invalid
 }
 
 $foo = function (): array {
     return ["foo", "bar"];
 };
+
+function fooBar(int $i) : string
+{
+    return (string) $i;
+}