diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6ce148e..5be1890 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [3.0.3] - 2025-11-19
+
+* [PR-28](https://github.com/OS2web/os2web_datalookup/pull/28)
+  Fixing DatafordelerBase missing configuration keys.
+
 ## [3.0.2] - 2025-10-28
 
 * [PR-27](https://github.com/OS2web/os2web_datalookup/pull/27)
diff --git a/src/Plugin/os2web/DataLookup/DatafordelerBase.php b/src/Plugin/os2web/DataLookup/DatafordelerBase.php
index 4d39fae..f89fb96 100644
--- a/src/Plugin/os2web/DataLookup/DatafordelerBase.php
+++ b/src/Plugin/os2web/DataLookup/DatafordelerBase.php
@@ -37,6 +37,16 @@ public function __construct(
     $this->init();
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function defaultConfiguration(): array {
+    return [
+      'cert_path_live' => '',
+      'cert_passphrase_live' => '',
+    ] + parent::defaultConfiguration();
+  }
+
   /**
    * {@inheritdoc}
    */