diff --git a/storage.bs b/storage.bs
index 45c7164..ac87fd2 100644
--- a/storage.bs
+++ b/storage.bs
@@ -179,6 +179,10 @@ defined by the following table:
   <td>"<code>caches</code>"
   <td>« "<code>local</code>" »
   <td>null
+ <tr>
+  <td>"<code>fileSystem</code>"
+  <td>« "<code>local</code>" »
+  <td>5 &times; 2<sup>20</sup> (i.e., 5 mebibytes)
  <tr>
   <td>"<code>indexedDB</code>"
   <td>« "<code>local</code>" »