diff --git a/cache/stores/redis/tests/compressor_test.php b/cache/stores/redis/tests/compressor_test.php
index a130586b1ca..05579ce89d7 100644
--- a/cache/stores/redis/tests/compressor_test.php
+++ b/cache/stores/redis/tests/compressor_test.php
@@ -37,10 +37,10 @@ require_once(__DIR__.'/../lib.php');
  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 final class compressor_test extends \advanced_testcase {
+    /** @var null|\cachestore_redis */
+    protected ?cachestore_redis $store = null;
 
-    /**
-     * Test set up
-     */
+    #[\Override]
     public function setUp(): void {
         if (!cachestore_redis::are_requirements_met() || !defined('TEST_CACHESTORE_REDIS_TESTSERVERS')) {
             $this->markTestSkipped('Could not test cachestore_redis. Requirements are not met.');
@@ -49,6 +49,16 @@ final class compressor_test extends \advanced_testcase {
         parent::setUp();
     }
 
+    #[\Override]
+    protected function tearDown(): void {
+        parent::tearDown();
+
+        if ($this->store !== null) {
+            $this->store->purge();
+            $this->store = null;
+        }
+    }
+
     /**
      * Create a cachestore.
      *
@@ -64,6 +74,7 @@ final class compressor_test extends \advanced_testcase {
         $config['serializer'] = $serializer;
         $store = new cachestore_redis('Test', $config);
         $store->initialise($definition);
+        $this->store = $store;
 
         return $store;
     }