diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 3991ffa..4cd1216 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -13,18 +13,16 @@ jobs:
     strategy:
       fail-fast: true
       matrix:
-        php: [7.2, 7.3, 7.4]
-        laravel: [^6.0, ^7.0, ^8.0]
-        scout: [^7.0, ^8.0]
-        exclude:
-          - php: 7.2
-            laravel: ^8.0
-          - laravel: ^8.0
-            scout: ^7.0
+        php: [8.0, 8.1]
+        laravel: [^7.0, ^8.0, ^9.0]
+        scout: [^8.0, ^9.0]
         include:
-          - php: 8.0
-            laravel: ^8.0
-            scout: ^8.0
+          - php: 7.4
+            laravel: ^6.0
+            scout: ^7.0
+          - php: 7.4
+            laravel: ^7.0
+            scout: ^7.0
 
     name: Test PHP ${{ matrix.php }} - Laravel ${{ matrix.laravel }} - Scout ${{ matrix.scout }}
 
diff --git a/composer.json b/composer.json
index 305a86c..0c51981 100644
--- a/composer.json
+++ b/composer.json
@@ -23,11 +23,11 @@
         }
     ],
     "require": {
-        "php": "^7.2|^8.0",
-        "illuminate/contracts": "~6.0|~7.0|~8.0",
-        "illuminate/database": "~6.0|~7.0|~8.0",
-        "illuminate/support": "~6.0|~7.0|~8.0",
-        "laravel/scout": "~7.0|~8.0"
+        "php": "^7.3|^8.0",
+        "illuminate/contracts": "~6.0|~7.0|~8.0|~9.0",
+        "illuminate/database": "~6.0|~7.0|~8.0|~9.0",
+        "illuminate/support": "~6.0|~7.0|~8.0|~9.0",
+        "laravel/scout": "~7.0|~8.0|~9.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^8.3",
diff --git a/src/PostgresEngine.php b/src/PostgresEngine.php
index b92b3e0..8ee4770 100644
--- a/src/PostgresEngine.php
+++ b/src/PostgresEngine.php
@@ -339,6 +339,42 @@ public function map(Builder $builder, $results, $model)
             });
     }
 
+    /**
+     * Map the given results to instances of the given model via a lazy collection.
+     *
+     * @param  \Laravel\Scout\Builder  $builder
+     * @param  mixed  $results
+     * @param  \Illuminate\Database\Eloquent\Model  $model
+     * @return \Illuminate\Support\LazyCollection
+     */
+    public function lazyMap(Builder $builder, $results, $model)
+    {
+        // TBD
+    }
+
+    /**
+     * Create a search index.
+     *
+     * @param  string  $name
+     * @param  array  $options
+     * @return mixed
+     */
+    public function createIndex($name, array $options = [])
+    {
+        // TBD.
+    }
+
+    /**
+     * Delete a search index.
+     *
+     * @param  string  $name
+     * @return mixed
+     */
+    public function deleteIndex($name)
+    {
+        // TBD.
+    }
+
     /**
      * Connect to the database.
      */