diff --git a/CHANGELOG.md b/CHANGELOG.md
index b5c1853..36fb6dd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@
 - All authenticators now return an `Innmind\Immutable\Attempt`
 - All authenticators can return any type inside the `Attempt`
 - Requires `innmind/foundation:~1.9`
+- `Innmind\HttpAuthentication\ViaAuthorization` constructor is private, use `::of()` instead
+- `Innmind\HttpAuthentication\ViaBasicAuthorization` constructor is private, use `::of()` instead
+- `Innmind\HttpAuthentication\ViaForm` constructor is private, use `::of()` instead
+- `Innmind\HttpAuthentication\ViaUrlAuthority` constructor is private, use `::of()` instead
 
 ### Removed
 
diff --git a/src/ViaAuthorization.php b/src/ViaAuthorization.php
index dc3a4df..1a3a79c 100644
--- a/src/ViaAuthorization.php
+++ b/src/ViaAuthorization.php
@@ -14,15 +14,11 @@
  */
 final class ViaAuthorization
 {
-    /** @var callable(Authorization): Attempt<T> */
-    private $resolve;
-
     /**
-     * @param callable(Authorization): Attempt<T> $resolve
+     * @param \Closure(Authorization): Attempt<T> $resolve
      */
-    public function __construct(callable $resolve)
+    private function __construct(private \Closure $resolve)
     {
-        $this->resolve = $resolve;
     }
 
     /**
@@ -36,4 +32,16 @@ public function __invoke(ServerRequest $request): Attempt
             ->attempt(static fn() => new \RuntimeException('Failed to resolve identity'))
             ->flatMap(fn($value) => ($this->resolve)($value));
     }
+
+    /**
+     * @template A
+     *
+     * @param callable(Authorization): Attempt<A> $resolve
+     *
+     * @return self<A>
+     */
+    public static function of(callable $resolve): self
+    {
+        return new self(\Closure::fromCallable($resolve));
+    }
 }
diff --git a/src/ViaBasicAuthorization.php b/src/ViaBasicAuthorization.php
index 7a8d75c..86631c7 100644
--- a/src/ViaBasicAuthorization.php
+++ b/src/ViaBasicAuthorization.php
@@ -14,15 +14,11 @@
  */
 final class ViaBasicAuthorization
 {
-    /** @var callable(string, string): Attempt<T> */
-    private $resolve;
-
     /**
-     * @param callable(string, string): Attempt<T> $resolve
+     * @param \Closure(string, string): Attempt<T> $resolve
      */
-    public function __construct(callable $resolve)
+    private function __construct(private \Closure $resolve)
     {
-        $this->resolve = $resolve;
     }
 
     /**
@@ -47,4 +43,16 @@ public function __invoke(ServerRequest $request): Attempt
                 return ($this->resolve)($user, $password);
             });
     }
+
+    /**
+     * @template A
+     *
+     * @param callable(string, string): Attempt<A> $resolve
+     *
+     * @return self<A>
+     */
+    public static function of(callable $resolve): self
+    {
+        return new self(\Closure::fromCallable($resolve));
+    }
 }
diff --git a/src/ViaForm.php b/src/ViaForm.php
index 002b4ee..e015c43 100644
--- a/src/ViaForm.php
+++ b/src/ViaForm.php
@@ -18,15 +18,11 @@
  */
 final class ViaForm
 {
-    /** @var callable(Form): Attempt<T> */
-    private $resolve;
-
     /**
-     * @param callable(Form): Attempt<T> $resolve
+     * @param \Closure(Form): Attempt<T> $resolve
      */
-    public function __construct(callable $resolve)
+    private function __construct(private \Closure $resolve)
     {
-        $this->resolve = $resolve;
     }
 
     /**
@@ -39,4 +35,16 @@ public function __invoke(ServerRequest $request): Attempt
             ->attempt(static fn() => new \RuntimeException('Failed to resolve identity'))
             ->flatMap(fn($request) => ($this->resolve)($request->form()));
     }
+
+    /**
+     * @template A
+     *
+     * @param callable(Form): Attempt<A> $resolve
+     *
+     * @return self<A>
+     */
+    public static function of(callable $resolve): self
+    {
+        return new self(\Closure::fromCallable($resolve));
+    }
 }
diff --git a/src/ViaUrlAuthority.php b/src/ViaUrlAuthority.php
index aecb7b4..da2cb4b 100644
--- a/src/ViaUrlAuthority.php
+++ b/src/ViaUrlAuthority.php
@@ -15,15 +15,11 @@
  */
 final class ViaUrlAuthority
 {
-    /** @var callable(User, Password): Attempt<T> */
-    private $resolve;
-
     /**
-     * @param callable(User, Password): Attempt<T> $resolve
+     * @param \Closure(User, Password): Attempt<T> $resolve
      */
-    public function __construct(callable $resolve)
+    private function __construct(private \Closure $resolve)
     {
-        $this->resolve = $resolve;
     }
 
     /**
@@ -41,4 +37,16 @@ public function __invoke(ServerRequest $request): Attempt
 
         return ($this->resolve)($user, $password);
     }
+
+    /**
+     * @template A
+     *
+     * @param callable(User, Password): Attempt<A> $resolve
+     *
+     * @return self<A>
+     */
+    public static function of(callable $resolve): self
+    {
+        return new self(\Closure::fromCallable($resolve));
+    }
 }
diff --git a/tests/ViaAuthorizationTest.php b/tests/ViaAuthorizationTest.php
index a892b7b..585e5d1 100644
--- a/tests/ViaAuthorizationTest.php
+++ b/tests/ViaAuthorizationTest.php
@@ -21,7 +21,7 @@ class ViaAuthorizationTest extends TestCase
 {
     public function testReturnNothingWhenNoAuthorizationHeader()
     {
-        $authenticate = new ViaAuthorization(
+        $authenticate = ViaAuthorization::of(
             static fn() => throw new \Exception,
         );
         $request = ServerRequest::of(
@@ -38,7 +38,7 @@ public function testReturnNothingWhenNoAuthorizationHeader()
 
     public function testReturnNothingWhenAuthorizationHeaderNotParsedCorrectly()
     {
-        $authenticate = new ViaAuthorization(
+        $authenticate = ViaAuthorization::of(
             static fn() => throw new \Exception,
         );
         $request = ServerRequest::of(
@@ -58,7 +58,7 @@ public function testReturnNothingWhenAuthorizationHeaderNotParsedCorrectly()
 
     public function testInvokation()
     {
-        $authenticate = new ViaAuthorization(
+        $authenticate = ViaAuthorization::of(
             static fn($value) => Attempt::result($value),
         );
         $expected = Authorization::of('Bearer', 'foo');
diff --git a/tests/ViaBasicAuthorizationTest.php b/tests/ViaBasicAuthorizationTest.php
index 884ddb8..9b53ece 100644
--- a/tests/ViaBasicAuthorizationTest.php
+++ b/tests/ViaBasicAuthorizationTest.php
@@ -21,7 +21,7 @@ class ViaBasicAuthorizationTest extends TestCase
 {
     public function testReturnNothingWhenNoAuthorizationHeader()
     {
-        $authenticate = new ViaBasicAuthorization(
+        $authenticate = ViaBasicAuthorization::of(
             static fn() => throw new \Exception,
         );
         $request = ServerRequest::of(
@@ -38,7 +38,7 @@ public function testReturnNothingWhenNoAuthorizationHeader()
 
     public function testReturnNothingWhenAuthorizationHeaderNotParsedCorrectly()
     {
-        $authenticate = new ViaBasicAuthorization(
+        $authenticate = ViaBasicAuthorization::of(
             static fn() => throw new \Exception,
         );
         $request = ServerRequest::of(
@@ -58,7 +58,7 @@ public function testReturnNothingWhenAuthorizationHeaderNotParsedCorrectly()
 
     public function testReturnNothingWhenNotBasicAuthorization()
     {
-        $authenticate = new ViaBasicAuthorization(
+        $authenticate = ViaBasicAuthorization::of(
             static fn() => throw new \Exception,
         );
         $request = ServerRequest::of(
@@ -78,7 +78,7 @@ public function testReturnNothingWhenNotBasicAuthorization()
 
     public function testInvokation()
     {
-        $authenticate = new ViaBasicAuthorization(
+        $authenticate = ViaBasicAuthorization::of(
             static fn($user, $password) => Attempt::result([$user, $password]),
         );
         $request = ServerRequest::of(
diff --git a/tests/ViaFormTest.php b/tests/ViaFormTest.php
index 76f104c..9aa11ed 100644
--- a/tests/ViaFormTest.php
+++ b/tests/ViaFormTest.php
@@ -17,7 +17,7 @@ class ViaFormTest extends TestCase
 {
     public function testReturnNothingWhenNotPostRequest()
     {
-        $authenticate = new ViaForm(
+        $authenticate = ViaForm::of(
             static fn() => throw new \Exception,
         );
         $request = ServerRequest::of(
@@ -34,7 +34,7 @@ public function testReturnNothingWhenNotPostRequest()
 
     public function testInvokation()
     {
-        $authenticate = new ViaForm(
+        $authenticate = ViaForm::of(
             static fn($value) => Attempt::result($value),
         );
         $request = ServerRequest::of(
diff --git a/tests/ViaUrlAuthorityTest.php b/tests/ViaUrlAuthorityTest.php
index efcd1a4..c29f232 100644
--- a/tests/ViaUrlAuthorityTest.php
+++ b/tests/ViaUrlAuthorityTest.php
@@ -17,7 +17,7 @@ class ViaUrlAuthorityTest extends TestCase
 {
     public function testReturnNothingWhenNoUserProvidedInTheUrl()
     {
-        $authenticate = new ViaUrlAuthority(
+        $authenticate = ViaUrlAuthority::of(
             static fn() => throw new \Exception,
         );
         $url = Url::of('https://localhost/');
@@ -35,7 +35,7 @@ public function testReturnNothingWhenNoUserProvidedInTheUrl()
 
     public function testInvokation()
     {
-        $authenticate = new ViaUrlAuthority(
+        $authenticate = ViaUrlAuthority::of(
             static fn($user, $password) => Attempt::result([$user, $password]),
         );
         $url = Url::of('https://user:password@localhost/');