diff --git a/redaxo/src/addons/media_manager/package.yml b/redaxo/src/addons/media_manager/package.yml
index d42733e655..e3eccda223 100644
--- a/redaxo/src/addons/media_manager/package.yml
+++ b/redaxo/src/addons/media_manager/package.yml
@@ -16,5 +16,5 @@ page:
 
 requires:
     php:
-        extensions: [gd]
+        extensions: [gd, fileinfo]
     redaxo: ^5.1.0