diff --git a/CHANGELOG.md b/CHANGELOG.md
index dd1e653..d25aecb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,12 +1,10 @@
-# Test Support Change Log
-
+# Yii Test Support Change Log
 
 ## 1.0.1 under development
 
-- no changes in this release.
+- Enh #23: Add `SimpleEventDispatcher::clearEvents()` that clear all events in event dispatcher (vjik)
 
 ## 1.0.0 December 24, 2020
 
-
 - Initial release.
 
diff --git a/composer.json b/composer.json
index b66d9c4..edeac72 100644
--- a/composer.json
+++ b/composer.json
@@ -23,9 +23,9 @@
     },
     "require-dev": {
         "phpunit/phpunit": "^9.5",
-        "roave/infection-static-analysis-plugin": "^1.5",
+        "roave/infection-static-analysis-plugin": "^1.7",
         "spatie/phpunit-watcher": "^1.23",
-        "vimeo/psalm": "^4.3"
+        "vimeo/psalm": "^4.6"
     },
     "autoload": {
         "psr-4": {
diff --git a/src/EventDispatcher/SimpleEventDispatcher.php b/src/EventDispatcher/SimpleEventDispatcher.php
index 6d18d45..efa9f04 100644
--- a/src/EventDispatcher/SimpleEventDispatcher.php
+++ b/src/EventDispatcher/SimpleEventDispatcher.php
@@ -7,12 +7,14 @@
 use Closure;
 use Psr\EventDispatcher\EventDispatcherInterface;
 use Psr\EventDispatcher\StoppableEventInterface;
+
 use function get_class;
 
 final class SimpleEventDispatcher implements EventDispatcherInterface
 {
-    /** @var array<int, Closure>  */
+    /** @var array<int, Closure> */
     private array $listeners;
+
     /** @var object[] */
     private array $events = [];
 
@@ -41,6 +43,11 @@ public function getEvents(): array
         return $this->events;
     }
 
+    public function clearEvents(): void
+    {
+        $this->events = [];
+    }
+
     public function isObjectTriggered(object $event, int $times = null): bool
     {
         return $this->processBoolResult(static fn (object $e): bool => $e === $event, $times);
diff --git a/src/SimpleCache/MemorySimpleCache.php b/src/SimpleCache/MemorySimpleCache.php
index 4e482ec..00cfc93 100644
--- a/src/SimpleCache/MemorySimpleCache.php
+++ b/src/SimpleCache/MemorySimpleCache.php
@@ -77,6 +77,9 @@ public function clear(): bool
     }
 
     /**
+     * @param iterable $keys
+     * @param mixed $default
+     *
      * @return mixed[]
      */
     public function getMultiple($keys, $default = null): iterable
@@ -92,6 +95,10 @@ public function getMultiple($keys, $default = null): iterable
         return $result;
     }
 
+    /**
+     * @param iterable $values
+     * @param DateInterval|int|null $ttl
+     */
     public function setMultiple($values, $ttl = null): bool
     {
         $values = $this->iterableToArray($values);
diff --git a/tests/EventDispatcher/SimpleEventDispatcherTest.php b/tests/EventDispatcher/SimpleEventDispatcherTest.php
index af7e9fb..cd230f1 100644
--- a/tests/EventDispatcher/SimpleEventDispatcherTest.php
+++ b/tests/EventDispatcher/SimpleEventDispatcherTest.php
@@ -232,6 +232,15 @@ public function testGetEmptyEvents(): void
         $this->assertSame([], $dispatcher->getEvents());
     }
 
+    public function testClear(): void
+    {
+        $dispatcher = $this->prepareDispatcher();
+        $dispatcher->dispatch(new DateTimeImmutable());
+        $dispatcher->clearEvents();
+
+        self::assertEmpty($dispatcher->getEvents());
+    }
+
     protected function prepareDispatcher(Closure ...$dispatcher): SimpleEventDispatcher
     {
         return new SimpleEventDispatcher(...$dispatcher);