diff --git a/README.md b/README.md
index cc57dd1..5cedf65 100644
--- a/README.md
+++ b/README.md
@@ -177,8 +177,6 @@ steps:
 #### extends
 The action can be used with `extends` option to extend an existing [sharable configuration](https://semantic-release.gitbook.io/semantic-release/usage/shareable-configurations) of semantic-release. Can be used in combination with `extra_plugins`.
 
-_github-action_
-
 ```yaml
 steps:
   - name: Checkout
diff --git a/action.yml b/action.yml
index 8e82bbb..132a913 100644
--- a/action.yml
+++ b/action.yml
@@ -21,6 +21,7 @@ inputs:
     required: false
     description: 'Whether to run semantic release in `dry-run` mode. It will override the dryRun attribute in your configuration file'
   extends:
+    required: false
     description: 'One or several sharable configurations, https://semantic-release.gitbook.io/semantic-release/usage/configuration#extends'
 outputs:
   new_release_published: