diff --git a/README.md b/README.md
index 833562a..7b6595b 100644
--- a/README.md
+++ b/README.md
@@ -24,13 +24,13 @@ composer require inspector-apm/inspector-symfony
 
 <a name="api-key"></a>
 
-### Configure the API Key
+### Configure the INGESTION Key
 
-Create the `inspector.yaml` configuration file in your `config/packages` directory, and put the `api_key` field inside:
+Create the `inspector.yaml` configuration file in your `config/packages` directory, and put the `ingestion_key` field inside:
 
 ```yaml
 inspector:
-    api_key: [your-application-api-key]
+    api_key: [your-ingestion-key]
 ```
 
 You can obtain the `api_key` creating a new project in your [Inspector](https://www.inspector.dev) dashboard.
diff --git a/recipe/config/packages/inspector.yaml b/recipe/config/packages/inspector.yaml
index 1008c61..97beabe 100644
--- a/recipe/config/packages/inspector.yaml
+++ b/recipe/config/packages/inspector.yaml
@@ -1,2 +1,2 @@
 inspector:
-    api_key: '%env(INSPECTOR_API_KEY)%'
+    ingestion_key: '%env(INSPECTOR_INGESTION_KEY)%'
diff --git a/src/DependencyInjection/Configuration.php b/src/DependencyInjection/Configuration.php
index 5baacde..41cff17 100644
--- a/src/DependencyInjection/Configuration.php
+++ b/src/DependencyInjection/Configuration.php
@@ -18,7 +18,7 @@ public function getConfigTreeBuilder()
         $tree->getRootNode()->children()
             ->booleanNode('enabled')->defaultTrue()->end()
             ->scalarNode('url')->defaultValue('https://ingest.inspector.dev')->end()
-            ->scalarNode('api_key')->defaultNull()->end()
+            ->scalarNode('ingestion_key')->defaultNull()->end()
             ->booleanNode('unhandled_exceptions')->defaultTrue()->end()
             ->booleanNode('query')->defaultTrue()->end()
             ->booleanNode('query_bindings')->defaultFalse()->end()