diff --git a/Post-Installation.md b/Post-Installation.md
index 0e8f18c..912536d 100644
--- a/Post-Installation.md
+++ b/Post-Installation.md
@@ -29,13 +29,13 @@ We need to tell Omeka to accept uploading extra new types
 **Allowed file extensions**
 
 ```
-ogv,svg,obj,stl
+ogv,svg,obj,stl,json
 ```
 
 **Allowed media types**
 
 ```
-image/svg+xml,application/octet-stream
+image/svg+xml,application/octet-stream,application/json
 ```