diff --git a/src/db.rs b/src/db.rs
index 21b1751..279dff8 100644
--- a/src/db.rs
+++ b/src/db.rs
@@ -31,7 +31,16 @@ lazy_static! {
                  value TEXT NOT NULL,
                  FOREIGN KEY(id) REFERENCES items(id) ON DELETE CASCADE,
                  PRIMARY KEY(id, name));"
-        )
+        ),
+        M::up(
+            "ALTER TABLE items ALTER COLUMN compression SET DEFAULT 'none';"
+        ),
+        M::up(
+            "ALTER TABLE items ADD COLUMN digest_type TEXT NOT NULL DEFAULT 'none';"
+        ),
+        M::up(
+            "ALTER TABLE items ADD COLUMN digest_value TEXT NULL;"
+        ),        
     ]);
 }
 
@@ -41,6 +50,8 @@ pub struct Item {
     pub ts: DateTime<Utc>,
     pub size: Option<i64>,
     pub compression: String,
+    pub digest_type: String,
+    pub digest_value: String,
 }
 
 #[derive(Debug, Clone)]