diff --git a/pg/init-header.sql b/pg/init-header.sql
index b1a2344..01e85a9 100644
--- a/pg/init-header.sql
+++ b/pg/init-header.sql
@@ -5,3 +5,5 @@ CREATE TABLE header (
     name TEXT,
     value TEXT
 );
+
+CREATE INDEX ON header (hash);
diff --git a/pg/init-original.sql b/pg/init-original.sql
index aa27cc6..f126120 100644
--- a/pg/init-original.sql
+++ b/pg/init-original.sql
@@ -22,3 +22,5 @@ CREATE TABLE original (
     total_size INTEGER,
     blob BYTEA
 );
+
+CREATE INDEX ON original (hash);