diff --git a/tests/Stubs/ClientEntity.php b/tests/Stubs/ClientEntity.php
index 74775ab0..4956b62b 100644
--- a/tests/Stubs/ClientEntity.php
+++ b/tests/Stubs/ClientEntity.php
@@ -53,7 +53,7 @@ class ClientEntity implements ClientEntityInterface
      */
     public function setSecret($secret)
     {
-        $this->secret = $secret;
+        $this->secret = password_hash($secret, PASSWORD_DEFAULT);
     }
 
     /**
@@ -79,4 +79,14 @@ class ClientEntity implements ClientEntityInterface
     {
         return $this->redirectUri;
     }
+
+    /**
+     * Get the hashed client secret
+     *
+     * @return string
+     */
+    public function getSecret()
+    {
+        return $this->secret;
+    }
 }