diff --git a/config/packages/api_platform.yaml b/config/packages/api_platform.yaml
index 713aeed..bd6c94c 100644
--- a/config/packages/api_platform.yaml
+++ b/config/packages/api_platform.yaml
@@ -6,6 +6,7 @@ api_platform:
         jsonld: [ 'application/ld+json' ]
         xml: [ 'application/xml' ]
         json: [ 'application/json' ]
+        text: [ 'text/calendar' ]
     docs_formats:
         jsonld: [ 'application/ld+json' ]
         jsonopenapi: [ 'application/vnd.openapi+json' ]