diff --git a/scripts/migration.sql b/scripts/migration.sql
index 382379c..4ffb491 100644
--- a/scripts/migration.sql
+++ b/scripts/migration.sql
@@ -2,7 +2,7 @@
 -- on.
 
 ALTER TABLE messages ADD COLUMN year integer;
-INSERT INTO messages(year) select extract(year from timestamp) from messages;
+update messages set year = extract(year from timestamp);