diff --git a/src/default_versions.rs b/src/default_versions.rs
index ce935c8..299ee4f 100644
--- a/src/default_versions.rs
+++ b/src/default_versions.rs
@@ -11,4 +11,5 @@ use serde_derive::Deserialize;
 pub struct Row {
     pub crate_id: CrateId,
     pub version_id: VersionId,
+    pub num_versions: Option<u32>,
 }
diff --git a/src/lib.rs b/src/lib.rs
index 827c2fe..8552178 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -122,6 +122,7 @@ pub struct DbDump {
     /// <th>default_versions.csv</th>
     /// <td>crate_id</td>
     /// <td>version_id</td>
+    /// <td>num_versions</td>
     /// </tr></table>
     pub default_versions: Vec<default_versions::Row>,