diff --git a/composer.json b/composer.json
index 607f880..cb08795 100644
--- a/composer.json
+++ b/composer.json
@@ -20,7 +20,7 @@
         "psr/log": "^1.1"
     },
     "require-dev": {
-        "infection/infection": "^0.20",
+        "infection/infection": "^0.21",
         "laminas/laminas-diactoros": "^2.5",
         "lcobucci/coding-standard": "^6.0",
         "phpstan/extension-installer": "^1.1",
diff --git a/composer.lock b/composer.lock
index ce5dc24..fe7238a 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "d4c9220ed7f73ccd8d3c6e75d4d584e6",
+    "content-hash": "1ff5907d4bedb84d2a8abc193fb2a783",
     "packages": [
         {
             "name": "fig/http-message-util",
@@ -770,16 +770,16 @@
         },
         {
             "name": "infection/infection",
-            "version": "0.20.2",
+            "version": "0.21.0",
             "source": {
                 "type": "git",
                 "url": "https://github.com/infection/infection.git",
-                "reference": "6035c1566af6a5a8d833a276351e5e18ed412305"
+                "reference": "dfacb1e3d9def7fd34c6fb8df4d4bd098815dc82"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/infection/infection/zipball/6035c1566af6a5a8d833a276351e5e18ed412305",
-                "reference": "6035c1566af6a5a8d833a276351e5e18ed412305",
+                "url": "https://api.github.com/repos/infection/infection/zipball/dfacb1e3d9def7fd34c6fb8df4d4bd098815dc82",
+                "reference": "dfacb1e3d9def7fd34c6fb8df4d4bd098815dc82",
                 "shasum": ""
             },
             "require": {
@@ -791,11 +791,12 @@
                 "infection/extension-installer": "^0.1.0",
                 "infection/include-interceptor": "^0.2.4",
                 "justinrainbow/json-schema": "^5.2",
-                "nikic/php-parser": "^4.10.2",
+                "nikic/php-parser": "^4.10.3",
                 "ocramius/package-versions": "^1.2 || ^2.0",
                 "ondram/ci-detector": "^3.3.0",
                 "php": "^7.4 || ^8.0",
-                "sanmai/pipeline": "^3.1 || ^5.0",
+                "sanmai/later": "^0.1.1",
+                "sanmai/pipeline": "^5.1",
                 "sebastian/diff": "^3.0.2 || ^4.0",
                 "seld/jsonlint": "^1.7",
                 "symfony/console": "^3.4.29 || ^4.1.19 || ^5.0",
@@ -820,10 +821,9 @@
                 "phpstan/phpstan-strict-rules": "^0.12.5",
                 "phpstan/phpstan-webmozart-assert": "^0.12.2",
                 "phpunit/phpunit": "^9.3.11",
-                "symfony/phpunit-bridge": "^4.4.14 || ^5.1.6",
+                "symfony/phpunit-bridge": "^4.4.18 || ^5.1.10",
                 "symfony/yaml": "^5.0",
-                "thecodingmachine/phpstan-safe-rule": "^1.0",
-                "vimeo/psalm": "^4.0"
+                "thecodingmachine/phpstan-safe-rule": "^1.0"
             },
             "bin": [
                 "bin/infection"
@@ -877,7 +877,17 @@
                 "testing",
                 "unit testing"
             ],
-            "time": "2020-11-20T17:15:57+00:00"
+            "funding": [
+                {
+                    "url": "https://github.com/infection",
+                    "type": "github"
+                },
+                {
+                    "url": "https://opencollective.com/infection",
+                    "type": "open_collective"
+                }
+            ],
+            "time": "2021-01-26T22:10:01+00:00"
         },
         {
             "name": "justinrainbow/json-schema",
@@ -2410,6 +2420,60 @@
             ],
             "time": "2017-02-14T16:28:37+00:00"
         },
+        {
+            "name": "sanmai/later",
+            "version": "0.1.2",
+            "source": {
+                "type": "git",
+                "url": "https://github.com/sanmai/later.git",
+                "reference": "9b659fecef2030193fd02402955bc39629d5606f"
+            },
+            "dist": {
+                "type": "zip",
+                "url": "https://api.github.com/repos/sanmai/later/zipball/9b659fecef2030193fd02402955bc39629d5606f",
+                "reference": "9b659fecef2030193fd02402955bc39629d5606f",
+                "shasum": ""
+            },
+            "require": {
+                "php": ">=7.1"
+            },
+            "require-dev": {
+                "friendsofphp/php-cs-fixer": "^2.13",
+                "infection/infection": ">=0.10.5",
+                "phan/phan": ">=2",
+                "php-coveralls/php-coveralls": "^2.0",
+                "phpstan/phpstan": ">=0.10",
+                "phpunit/phpunit": ">=7.4",
+                "vimeo/psalm": ">=2"
+            },
+            "type": "library",
+            "autoload": {
+                "psr-4": {
+                    "Later\\": "src/"
+                },
+                "files": [
+                    "src/functions.php"
+                ]
+            },
+            "notification-url": "https://packagist.org/downloads/",
+            "license": [
+                "Apache-2.0"
+            ],
+            "authors": [
+                {
+                    "name": "Alexey Kopytko",
+                    "email": "alexey@kopytko.com"
+                }
+            ],
+            "description": "Later: deferred wrapper object",
+            "funding": [
+                {
+                    "url": "https://github.com/sanmai",
+                    "type": "github"
+                }
+            ],
+            "time": "2021-01-02T10:26:44+00:00"
+        },
         {
             "name": "sanmai/pipeline",
             "version": "v5.1.0",