diff --git a/docs/pages/project/changelog.md b/docs/pages/project/changelog.md
index c18c958e..777d48ab 100644
--- a/docs/pages/project/changelog.md
+++ b/docs/pages/project/changelog.md
@@ -9,6 +9,7 @@ Below are listed the changelogs for all released versions of the library.
 
 ## Version 1
 
+- [`1.11.0` — 27th of March 2024](changelog/version-1.11.0.md)
 - [`1.10.0` — 12th of March 2024](changelog/version-1.10.0.md)
 - [`1.9.0` — 2nd of February 2024](changelog/version-1.9.0.md)
 - [`1.8.2` — 8th of January 2024](changelog/version-1.8.2.md)
diff --git a/docs/pages/project/changelog/version-1.10.0.md b/docs/pages/project/changelog/version-1.10.0.md
index d8f87b36..44c1dc12 100644
--- a/docs/pages/project/changelog/version-1.10.0.md
+++ b/docs/pages/project/changelog/version-1.10.0.md
@@ -1,7 +1,7 @@
 # Changelog 1.10.0 — 12th of March 2024
 
 !!! info inline end "[See release on GitHub]"
-[See release on GitHub]: https://github.com/CuyZ/Valinor/releases/tag/1.9.0
+    [See release on GitHub]: https://github.com/CuyZ/Valinor/releases/tag/1.10.0
 
 ## Notable changes
 
diff --git a/docs/pages/project/changelog/version-1.11.0.md b/docs/pages/project/changelog/version-1.11.0.md
new file mode 100644
index 00000000..4c96060f
--- /dev/null
+++ b/docs/pages/project/changelog/version-1.11.0.md
@@ -0,0 +1,130 @@
+# Changelog 1.11.0 — 27th of March 2024
+
+!!! info inline end "[See release on GitHub]"
+    [See release on GitHub]: https://github.com/CuyZ/Valinor/releases/tag/1.11.0
+
+## Notable changes
+
+**Improvement of union types narrowing**
+
+The algorithm used by the mapper to narrow a union type has been greatly
+improved, and should cover more edge-cases that would previously prevent the
+mapper from performing well.
+
+If an interface, a class or a shaped array is matched by the input, it will take
+precedence over arrays or scalars.
+
+```php
+(new \CuyZ\Valinor\MapperBuilder())
+    ->mapper()
+    ->map(
+        signature: 'array<int>|' . Color::class,
+        source: [
+            'red' => 255,
+            'green' => 128,
+            'blue' => 64,
+        ],
+    ); // Returns an instance of `Color`
+```
+
+When superfluous keys are allowed, if the input matches several interfaces,
+classes or shaped array, the one with the most children node will be
+prioritized, as it is considered the most specific type:
+
+```php
+(new \CuyZ\Valinor\MapperBuilder())
+    ->allowSuperfluousKeys()
+    ->mapper()
+    ->map(
+        // Even if the first shaped array matches the input, the second one is
+        // used because it's more specific.
+        signature: 'array{foo: int}|array{foo: int, bar: int}',
+        source: [
+            'foo' => 42,
+            'bar' => 1337,
+        ],
+    );
+```
+
+If the input matches several types within the union, a collision will occur and
+cause the mapper to fail:
+
+```php
+(new \CuyZ\Valinor\MapperBuilder())
+    ->mapper()
+    ->map(
+        // Even if the first shaped array matches the input, the second one is
+        // used because it's more specific.
+        signature: 'array{red: int, green: int, blue: int}|' . Color::class,
+        source: [
+            'red' => 255,
+            'green' => 128,
+            'blue' => 64,
+        ],
+    );
+
+// ⚠️ Invalid value array{red: 255, green: 128, blue: 64}, it matches at
+//    least two types from union.
+```
+
+**Introducing `AsTransformer` attribute**
+
+After the introduction of the [`Constructor` attribute](https://github.com/CuyZ/Valinor/commit/d86295c2fe2e7ea7ed37d00fd39f20f31a694129)
+used for the mapper, the new `AsTransformer` attribute is now available for the
+normalizer to ease the registration of a transformer.
+
+```php
+namespace My\App;
+
+#[\CuyZ\Valinor\Normalizer\AsTransformer]
+#[\Attribute(\Attribute::TARGET_PROPERTY)]
+final class DateTimeFormat
+{
+    public function __construct(private string $format) {}
+
+    public function normalize(\DateTimeInterface $date): string
+    {
+        return $date->format($this->format);
+    }
+}
+
+final readonly class Event
+{
+    public function __construct(
+        public string $eventName,
+        #[\My\App\DateTimeFormat('Y/m/d')]
+        public \DateTimeInterface $date,
+    ) {}
+}
+
+(new \CuyZ\Valinor\MapperBuilder())
+    ->normalizer(\CuyZ\Valinor\Normalizer\Format::array())
+    ->normalize(new \My\App\Event(
+        eventName: 'Release of legendary album',
+        date: new \DateTimeImmutable('1971-11-08'),
+    ));
+
+// [
+//     'eventName' => 'Release of legendary album',
+//     'date' => '1971/11/08',
+// ]
+```
+
+### Features
+
+* Improve union type narrowing during mapping ([f73158](https://github.com/CuyZ/Valinor/commit/f73158657c8e876e8b3142d6064878b6af1c3525))
+* Introduce `AsTransformer` attribute ([13b6d0](https://github.com/CuyZ/Valinor/commit/13b6d0186adbaafdd4474fc1dbdc725aa3ad8585))
+
+### Bug Fixes
+
+* Handle single array mapping when a superfluous value is present ([86d021](https://github.com/CuyZ/Valinor/commit/86d021a2fdd9932554a2e41a08d19d8801371f6f))
+* Properly handle `ArrayObject` normalization ([4f555d](https://github.com/CuyZ/Valinor/commit/4f555d9bc9de996b5c577396076b674e17fbb429))
+* Properly handle class type with matching name and namespace ([0f5e96](https://github.com/CuyZ/Valinor/commit/0f5e96e6a7567465c623914d038342ba56875595))
+* Properly handle nested unresolvable type during mapping ([194706](https://github.com/CuyZ/Valinor/commit/19470614fa99b97341975a44fdf034ff6e9a6f6d))
+* Strengthen type tokens extraction ([c9dc97](https://github.com/CuyZ/Valinor/commit/c9dc975357319ae77d352e17979888b08690ddbc))
+
+### Other
+
+* Reduce number of calls to class autoloader during type parsing ([0f0e35](https://github.com/CuyZ/Valinor/commit/0f0e35e71925bfb31ecd916766aca5492f12863d))
+* Refactor generic types parsing and checking ([ba6770](https://github.com/CuyZ/Valinor/commit/ba67703ed19f5bf35467cc54606ebfd373e6aedc))
+* Separate native type and docblock type for property and parameter ([37993b](https://github.com/CuyZ/Valinor/commit/37993b64a6eb04dc0aee79e03f2ddb4f86ff9c3a))