diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index eec5d12..86f4af6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,6 +22,8 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - uses: php-actions/composer@v6
+        with:
+          php_extensions: pcntl
       - name: PHPUnit Tests
         uses: php-actions/phpunit@v3
         with:
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 77f00ec..f0d6d2f 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -17,6 +17,7 @@ jobs:
           ## box.phar requires php72
           php-version: '7.4'
           tools: composer:v2
+          extensions: pcntl
 
       - name: Set env
         run: |
diff --git a/composer.json b/composer.json
index f5e09b2..2b137f3 100644
--- a/composer.json
+++ b/composer.json
@@ -2,6 +2,9 @@
     "name": "totten/loco",
     "description": "Loco is the YAML-based \"local-compose\" process manager",
     "require": {
+        "ext-json": "*",
+        "ext-posix": "*",
+        "ext-pcntl": "*",
         "marcj/topsort": "^1.1",
         "symfony/yaml": "~4.4",
         "symfony/finder": "~4.4",
diff --git a/composer.lock b/composer.lock
index 5f063f7..e39beeb 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": "ceefe675648adc9385bec252f90ed359",
+    "content-hash": "5cc8ab8769b53e698e298f78ab2e7bb8",
     "packages": [
         {
             "name": "civicrm/composer-downloads-plugin",
@@ -1544,10 +1544,14 @@
     "stability-flags": [],
     "prefer-stable": false,
     "prefer-lowest": false,
-    "platform": [],
+    "platform": {
+        "ext-json": "*",
+        "ext-posix": "*",
+        "ext-pcntl": "*"
+    },
     "platform-dev": [],
     "platform-overrides": {
         "php": "7.1.4"
     },
-    "plugin-api-version": "2.3.0"
+    "plugin-api-version": "2.2.0"
 }
diff --git a/src/Loco.php b/src/Loco.php
index 8f41d10..0995d8f 100644
--- a/src/Loco.php
+++ b/src/Loco.php
@@ -68,7 +68,7 @@ public static function dispatcher() {
    */
   public static function filter($eventName, $data) {
     $event = new LocoEvent($data);
-    self::dispatcher()->dispatch($eventName, $event);
+    self::dispatcher()->dispatch($event, $eventName);
     return $event->getArguments();
   }
 
diff --git a/tests/LocoFacadeTest.php b/tests/LocoFacadeTest.php
index 7c40dd0..b5d3eb2 100644
--- a/tests/LocoFacadeTest.php
+++ b/tests/LocoFacadeTest.php
@@ -22,7 +22,7 @@ public function testDispatcher() {
     Loco::dispatcher()->addListener('my-test', function() use (&$called) {
       $called = TRUE;
     });
-    Loco::dispatcher()->dispatch('my-test', new LocoEvent());
+    Loco::dispatcher()->dispatch(new LocoEvent(), 'my-test');
     $this->assertEquals(TRUE, $called);
   }