diff --git a/.gitattributes b/.gitattributes
index 78ec727..4d1c9da 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -4,7 +4,6 @@ test export-ignore
 .gitattributes export-ignore
 .gitignore export-ignore
 .php-cs-fixer.dist.php export-ignore
-.travis.yml export-ignore
 phpunit.xml.dist export-ignore
 README.md export-ignore
 CONTRIBUTING.md export-ignore
diff --git a/.gitignore b/.gitignore
index 6ab022b..ab1fc64 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 /composer.lock
 /.php_cs.cache
 /docs/Gemfile.lock
+/composer-require-checker.phar
diff --git a/composer-require-check.json b/composer-require-check.json
index d421268..b2ee8e9 100644
--- a/composer-require-check.json
+++ b/composer-require-check.json
@@ -16,9 +16,7 @@
         "mixed",
         "void",
         "object",
-        "escapeArguments",
-        "IS_WINDOWS",
-        "posix_kill"
+        "parallel"
     ],
     "php-core-extensions": [
         "Core",
diff --git a/composer.json b/composer.json
index 89b9e1e..2b4fa01 100644
--- a/composer.json
+++ b/composer.json
@@ -24,8 +24,9 @@
     },
     "require": {
         "php": ">=7.4",
-        "amphp/parallel": "^1.1",
         "amphp/amp": "^2.0.3",
+        "amphp/parallel": "^1.4",
+        "amphp/serialization": "^1.0",
         "laravel/serializable-closure": "^1.0"
     },
     "require-dev": {
diff --git a/src/functions.php b/src/functions.php
index c0925f0..be2ab41 100644
--- a/src/functions.php
+++ b/src/functions.php
@@ -3,9 +3,9 @@
 namespace Amp\ParallelFunctions;
 
 use Amp\MultiReasonException;
-use Amp\Parallel\Sync\SerializationException;
 use Amp\Parallel\Worker\Pool;
 use Amp\Promise;
+use Amp\Serialization\SerializationException;
 use Laravel\SerializableClosure\SerializableClosure;
 use function Amp\call;
 use function Amp\Parallel\Worker\enqueue;
@@ -53,7 +53,7 @@ function parallelMap(array $array, callable $callable, Pool $pool = null): Promi
     return call(function () use ($array, $callable, $pool) {
         // Amp\Promise\any() guarantees that all operations finished prior to resolving. Amp\Promise\all() doesn't.
         // Additionally, we return all errors as a MultiReasonException instead of throwing on the first error.
-        list($errors, $results) = yield any(\array_map(parallel($callable, $pool), $array));
+        [$errors, $results] = yield any(\array_map(parallel($callable, $pool), $array));
 
         if ($errors) {
             throw new MultiReasonException($errors);
@@ -90,11 +90,11 @@ function parallelFilter(array $array, callable $callable = null, int $flag = 0,
         // Amp\Promise\any() guarantees that all operations finished prior to resolving. Amp\Promise\all() doesn't.
         // Additionally, we return all errors as a MultiReasonException instead of throwing on the first error.
         if ($flag === \ARRAY_FILTER_USE_BOTH) {
-            list($errors, $results) = yield any(\array_map(parallel($callable, $pool), $array, \array_keys($array)));
+            [$errors, $results] = yield any(\array_map(parallel($callable, $pool), $array, \array_keys($array)));
         } elseif ($flag === \ARRAY_FILTER_USE_KEY) {
-            list($errors, $results) = yield any(\array_map(parallel($callable, $pool), \array_keys($array)));
+            [$errors, $results] = yield any(\array_map(parallel($callable, $pool), \array_keys($array)));
         } else {
-            list($errors, $results) = yield any(\array_map(parallel($callable, $pool), $array));
+            [$errors, $results] = yield any(\array_map(parallel($callable, $pool), $array));
         }
 
         if ($errors) {