diff --git a/infra/migrations/0066_add_authors_index.sql b/infra/migrations/0066_add_authors_index.sql
index 39d6c0b..2559f52 100644
--- a/infra/migrations/0066_add_authors_index.sql
+++ b/infra/migrations/0066_add_authors_index.sql
@@ -1,8 +1,8 @@
 -- GIN index for efficient array lookups on books.authors
-CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_books_authors_gin ON books USING GIN (authors);
+CREATE INDEX IF NOT EXISTS idx_books_authors_gin ON books USING GIN (authors);
 
 -- Index on author column for legacy single-author field
-CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_books_author ON books (author) WHERE author IS NOT NULL AND author != '';
+CREATE INDEX IF NOT EXISTS idx_books_author ON books (author) WHERE author IS NOT NULL AND author != '';
 
 -- GIN index on series_metadata.authors
-CREATE INDEX CONCURRENTLY IF NOT EXISTS idx_series_metadata_authors_gin ON series_metadata USING GIN (authors);
+CREATE INDEX IF NOT EXISTS idx_series_metadata_authors_gin ON series_metadata USING GIN (authors);