diff --git a/src/Symfony/Component/PropertyInfo/Tests/Extractor/PhpDocExtractorTest.php b/src/Symfony/Component/PropertyInfo/Tests/Extractor/PhpDocExtractorTest.php
index 3acadc6484be2..1a7dd664af4b8 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Extractor/PhpDocExtractorTest.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Extractor/PhpDocExtractorTest.php
@@ -109,7 +109,11 @@ public function typesProvider()
             ['a', [new Type(Type::BUILTIN_TYPE_INT)], 'A.', null],
             ['b', [new Type(Type::BUILTIN_TYPE_OBJECT, true, 'Symfony\Component\PropertyInfo\Tests\Fixtures\ParentDummy')], 'B.', null],
             ['c', [new Type(Type::BUILTIN_TYPE_BOOL, true)], null, null],
+            ['ct', [new Type(Type::BUILTIN_TYPE_TRUE, true)], null, null],
+            ['cf', [new Type(Type::BUILTIN_TYPE_FALSE, true)], null, null],
             ['d', [new Type(Type::BUILTIN_TYPE_BOOL)], null, null],
+            ['dt', [new Type(Type::BUILTIN_TYPE_TRUE)], null, null],
+            ['df', [new Type(Type::BUILTIN_TYPE_FALSE)], null, null],
             ['e', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_RESOURCE))], null, null],
             ['f', [new Type(Type::BUILTIN_TYPE_ARRAY, false, null, true, new Type(Type::BUILTIN_TYPE_INT), new Type(Type::BUILTIN_TYPE_OBJECT, false, 'DateTime'))], null, null],
             ['g', [new Type(Type::BUILTIN_TYPE_ARRAY, true, null, true)], 'Nullable array.', null],
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Extractor/ReflectionExtractorTest.php b/src/Symfony/Component/PropertyInfo/Tests/Extractor/ReflectionExtractorTest.php
index 1f65e57b62bd9..4fad83ef83a37 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Extractor/ReflectionExtractorTest.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Extractor/ReflectionExtractorTest.php
@@ -88,7 +88,11 @@ public function testGetProperties()
                 'date',
                 'element',
                 'c',
+                'ct',
+                'cf',
                 'd',
+                'dt',
+                'df',
                 'e',
                 'f',
             ],
@@ -134,7 +138,11 @@ public function testGetPropertiesWithCustomPrefixes()
                 'parentAnnotationNoParent',
                 'date',
                 'c',
+                'ct',
+                'cf',
                 'd',
+                'dt',
+                'df',
                 'e',
                 'f',
             ],
diff --git a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/ParentDummy.php b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/ParentDummy.php
index d698983254d75..a7c1f513a78c7 100644
--- a/src/Symfony/Component/PropertyInfo/Tests/Fixtures/ParentDummy.php
+++ b/src/Symfony/Component/PropertyInfo/Tests/Fixtures/ParentDummy.php
@@ -65,6 +65,20 @@ public function isC()
     {
     }
 
+    /**
+     * @return true|null
+     */
+    public function isCt()
+    {
+    }
+
+    /**
+     * @return false|null
+     */
+    public function isCf()
+    {
+    }
+
     /**
      * @return bool
      */
@@ -72,6 +86,20 @@ public function canD()
     {
     }
 
+    /**
+     * @return true
+     */
+    public function canDt()
+    {
+    }
+
+    /**
+     * @return false
+     */
+    public function canDf()
+    {
+    }
+
     /**
      * @param resource $e
      */
diff --git a/src/Symfony/Component/PropertyInfo/Type.php b/src/Symfony/Component/PropertyInfo/Type.php
index 582b98d6411f5..02c387db47483 100644
--- a/src/Symfony/Component/PropertyInfo/Type.php
+++ b/src/Symfony/Component/PropertyInfo/Type.php
@@ -24,6 +24,8 @@ class Type
     public const BUILTIN_TYPE_FLOAT = 'float';
     public const BUILTIN_TYPE_STRING = 'string';
     public const BUILTIN_TYPE_BOOL = 'bool';
+    public const BUILTIN_TYPE_TRUE = 'true';
+    public const BUILTIN_TYPE_FALSE = 'false';
     public const BUILTIN_TYPE_RESOURCE = 'resource';
     public const BUILTIN_TYPE_OBJECT = 'object';
     public const BUILTIN_TYPE_ARRAY = 'array';
@@ -41,6 +43,8 @@ class Type
         self::BUILTIN_TYPE_FLOAT,
         self::BUILTIN_TYPE_STRING,
         self::BUILTIN_TYPE_BOOL,
+        self::BUILTIN_TYPE_TRUE,
+        self::BUILTIN_TYPE_FALSE,
         self::BUILTIN_TYPE_RESOURCE,
         self::BUILTIN_TYPE_OBJECT,
         self::BUILTIN_TYPE_ARRAY,