diff --git a/migrations/2019-09-19-185655_add_experimental_indexes/down.sql b/migrations/2019-09-19-185655_add_experimental_indexes/down.sql
new file mode 100644
index 00000000000..1871ff378d6
--- /dev/null
+++ b/migrations/2019-09-19-185655_add_experimental_indexes/down.sql
@@ -0,0 +1,2 @@
+DROP INDEX IF EXISTS index_version_downloads_by_date;
+DROP INDEX IF EXISTS index_recent_crate_downloads_by_downloads;
diff --git a/migrations/2019-09-19-185655_add_experimental_indexes/up.sql b/migrations/2019-09-19-185655_add_experimental_indexes/up.sql
new file mode 100644
index 00000000000..3bd5a54464a
--- /dev/null
+++ b/migrations/2019-09-19-185655_add_experimental_indexes/up.sql
@@ -0,0 +1,9 @@
+-- These indexes were created on production by hand and never existed in migrations; give them
+-- better names now that we know we want to keep them
+ALTER INDEX IF EXISTS sgrif_testing RENAME TO index_recent_crate_downloads_by_downloads;
+ALTER INDEX IF EXISTS sgrif_testing2 RENAME TO index_version_downloads_by_date;
+
+-- Create the above indexes for databases other than production
+CREATE INDEX IF NOT EXISTS index_recent_crate_downloads_by_downloads
+  ON recent_crate_downloads USING btree (downloads);
+CREATE INDEX IF NOT EXISTS index_version_downloads_by_date ON version_downloads USING brin (date);