diff --git a/src/migrations/20220127134126_account-explicit-index.js b/src/migrations/20220127134126_account-explicit-index.js
new file mode 100644
index 00000000..240bb7db
--- /dev/null
+++ b/src/migrations/20220127134126_account-explicit-index.js
@@ -0,0 +1,10 @@
+const kIndexName = 'idx_tweets_account_explicit';
+
+exports.up = (knex) => {
+  return knex.schema
+    .raw(`create index if not exists ${kIndexName} on statuses using BTREE (account, explicit)`);
+};
+
+exports.down = (knex) => {
+  return knex.schema.raw(`drop index if exists ${kIndexName}`);
+};