diff --git a/src/FileSearch.Core/Indexing/IndexDatabase.cs b/src/FileSearch.Core/Indexing/IndexDatabase.cs
index 0d14ba2..baebec5 100644
--- a/src/FileSearch.Core/Indexing/IndexDatabase.cs
+++ b/src/FileSearch.Core/Indexing/IndexDatabase.cs
@@ -21,7 +21,7 @@ namespace FileSearch.Core.Indexing;
 /// </summary>
 internal sealed class IndexDatabase : IDisposable
 {
-    internal const string CurrentSchemaVersion = "25";
+    internal const string CurrentSchemaVersion = "26";
     private static readonly TimeSpan CompactLeaseDrainTimeout = TimeSpan.FromSeconds(5);
 
     /// <summary>
@@ -715,17 +715,17 @@ private static async Task EnsureMetaTableAsync(Database db, CancellationToken ca
 
     private async Task EnsureSchemaAsync(Database db, CancellationToken cancellationToken)
     {
-        await db.ExecuteAsync("CREATE TABLE IF NOT EXISTS index_volumes (id INTEGER PRIMARY KEY, volume_key TEXT, volume_serial TEXT, filesystem_name TEXT, is_remote INTEGER, usn_supported INTEGER, drive_kind TEXT, journal_id TEXT, last_committed_usn INTEGER, health TEXT, last_checked_utc_ticks INTEGER, last_error TEXT)", cancellationToken).ConfigureAwait(false);
-        await db.ExecuteAsync("CREATE TABLE IF NOT EXISTS index_roots (id INTEGER PRIMARY KEY, root_path TEXT, indexed_utc_ticks INTEGER, options_hash TEXT, volume_id INTEGER, last_full_scan_utc_ticks INTEGER, root_file_reference_number TEXT, root_parent_file_reference_number TEXT, content_version TEXT, location_kind TEXT, update_strategy TEXT, strategy_warning TEXT, usn_catch_up_enabled INTEGER, watcher_recommended INTEGER, last_full_validation_utc_ticks INTEGER, last_validation_status TEXT, last_validation_message TEXT, last_validation_files_checked INTEGER, last_validation_missing_from_index_count INTEGER, last_validation_changed_count INTEGER, last_validation_missing_from_disk_count INTEGER, last_validation_failed_count INTEGER)", cancellationToken).ConfigureAwait(false);
-        await db.ExecuteAsync("CREATE TABLE IF NOT EXISTS index_directories (id INTEGER PRIMARY KEY, root_id INTEGER, path TEXT, volume_id INTEGER, directory_reference_number TEXT, parent_file_reference_number TEXT, observed_utc_ticks INTEGER)", cancellationToken).ConfigureAwait(false);
-        await db.ExecuteAsync("CREATE TABLE IF NOT EXISTS files (id INTEGER PRIMARY KEY, root_id INTEGER, path TEXT, path_lower TEXT, directory_path TEXT, directory_path_lower TEXT, file_name TEXT, file_name_lower TEXT, extension TEXT, size_bytes INTEGER, created_utc_ticks INTEGER, modified_utc_ticks INTEGER, attributes INTEGER, file_type_category TEXT, indexed_utc_ticks INTEGER, status TEXT, error TEXT, volume_id INTEGER, file_reference_number TEXT, parent_file_reference_number TEXT, last_observed_usn INTEGER, content_version TEXT, open_count INTEGER, last_opened_utc_ticks INTEGER, extractor_id TEXT, extractor_version TEXT, extraction_attempt_count INTEGER, last_extraction_attempt_utc_ticks INTEGER)", cancellationToken).ConfigureAwait(false);
-        await db.ExecuteAsync("CREATE TABLE IF NOT EXISTS extraction_issues (id INTEGER PRIMARY KEY, file_id INTEGER, member_path TEXT, code TEXT, message TEXT, severity TEXT, created_utc_ticks INTEGER)", cancellationToken).ConfigureAwait(false);
-        await db.ExecuteAsync("CREATE TABLE IF NOT EXISTS validation_drifts (id INTEGER PRIMARY KEY, root_id INTEGER, path TEXT, kind TEXT, message TEXT, observed_utc_ticks INTEGER)", cancellationToken).ConfigureAwait(false);
-        await db.ExecuteAsync("CREATE TABLE IF NOT EXISTS file_metadata_tokens (id INTEGER PRIMARY KEY, root_id INTEGER, file_id INTEGER, token TEXT)", cancellationToken).ConfigureAwait(false);
+        await db.ExecuteAsync("CREATE TABLE IF NOT EXISTS index_volumes (id INTEGER PRIMARY KEY, volume_key TEXT, volume_serial TEXT, filesystem_name TEXT, is_remote INTEGER, usn_supported INTEGER, drive_kind TEXT, journal_id TEXT, last_committed_usn INTEGER, health TEXT, last_checked_utc_ticks BIGINT, last_error TEXT)", cancellationToken).ConfigureAwait(false);
+        await db.ExecuteAsync("CREATE TABLE IF NOT EXISTS index_roots (id INTEGER PRIMARY KEY, root_path TEXT, indexed_utc_ticks BIGINT, options_hash TEXT, volume_id INTEGER, last_full_scan_utc_ticks BIGINT, root_file_reference_number TEXT, root_parent_file_reference_number TEXT, content_version TEXT, location_kind TEXT, update_strategy TEXT, strategy_warning TEXT, usn_catch_up_enabled INTEGER, watcher_recommended INTEGER, last_full_validation_utc_ticks BIGINT, last_validation_status TEXT, last_validation_message TEXT, last_validation_files_checked INTEGER, last_validation_missing_from_index_count INTEGER, last_validation_changed_count INTEGER, last_validation_missing_from_disk_count INTEGER, last_validation_failed_count INTEGER)", cancellationToken).ConfigureAwait(false);
+        await db.ExecuteAsync("CREATE TABLE IF NOT EXISTS index_directories (id INTEGER PRIMARY KEY, root_id INTEGER, path TEXT, volume_id INTEGER, directory_reference_number TEXT, parent_file_reference_number TEXT, observed_utc_ticks BIGINT)", cancellationToken).ConfigureAwait(false);
+        await db.ExecuteAsync("CREATE TABLE IF NOT EXISTS files (id INTEGER PRIMARY KEY, root_id INTEGER, path TEXT, path_lower TEXT, directory_path TEXT, directory_path_lower TEXT, file_name TEXT, file_name_lower TEXT, extension TEXT, size_bytes INTEGER, created_utc_ticks BIGINT, modified_utc_ticks BIGINT, attributes INTEGER, file_type_category TEXT, indexed_utc_ticks BIGINT, status TEXT, error TEXT, volume_id INTEGER, file_reference_number TEXT, parent_file_reference_number TEXT, last_observed_usn INTEGER, content_version TEXT, open_count INTEGER, last_opened_utc_ticks BIGINT, extractor_id TEXT, extractor_version TEXT, extraction_attempt_count INTEGER, last_extraction_attempt_utc_ticks BIGINT)", cancellationToken).ConfigureAwait(false);
+        await db.ExecuteAsync("CREATE TABLE IF NOT EXISTS extraction_issues (id INTEGER PRIMARY KEY, file_id INTEGER, member_path TEXT, code TEXT, message TEXT, severity TEXT, created_utc_ticks BIGINT)", cancellationToken).ConfigureAwait(false);
+        await db.ExecuteAsync("CREATE TABLE IF NOT EXISTS validation_drifts (id INTEGER PRIMARY KEY, root_id INTEGER, path TEXT, kind TEXT, message TEXT, observed_utc_ticks BIGINT)", cancellationToken).ConfigureAwait(false);
+        await db.ExecuteAsync("CREATE TABLE IF NOT EXISTS file_metadata_tokens (id BIGINT PRIMARY KEY, root_id INTEGER, file_id INTEGER, token TEXT)", cancellationToken).ConfigureAwait(false);
         await db.ExecuteAsync("CREATE TABLE IF NOT EXISTS content_units (id INTEGER PRIMARY KEY, file_id INTEGER, kind TEXT, locator_json TEXT, unit_text TEXT, content_hash TEXT, language TEXT, extractor_id TEXT, extractor_version TEXT)", cancellationToken).ConfigureAwait(false);
         await db.ExecuteAsync("CREATE TABLE IF NOT EXISTS lines (id INTEGER PRIMARY KEY, file_id INTEGER, content_unit_id INTEGER, line_number INTEGER, content TEXT, anchor_json TEXT)", cancellationToken).ConfigureAwait(false);
-        await db.ExecuteAsync("CREATE TABLE IF NOT EXISTS file_trigrams (root_id INTEGER, trigram_code INTEGER, file_id INTEGER)", cancellationToken).ConfigureAwait(false);
-        await db.ExecuteAsync("CREATE TABLE IF NOT EXISTS pending_changes (id INTEGER PRIMARY KEY, root_path TEXT, path TEXT, kind INTEGER, queued_utc_ticks INTEGER)", cancellationToken).ConfigureAwait(false);
+        await db.ExecuteAsync("CREATE TABLE IF NOT EXISTS file_trigrams (root_id INTEGER, trigram_code BIGINT, file_id INTEGER)", cancellationToken).ConfigureAwait(false);
+        await db.ExecuteAsync("CREATE TABLE IF NOT EXISTS pending_changes (id INTEGER PRIMARY KEY, root_path TEXT, path TEXT, kind INTEGER, queued_utc_ticks BIGINT)", cancellationToken).ConfigureAwait(false);
         await db.ExecuteAsync("CREATE TABLE IF NOT EXISTS index_sequences (name TEXT PRIMARY KEY, next_id INTEGER)", cancellationToken).ConfigureAwait(false);
 
         await TryExecuteAsync(db, "CREATE UNIQUE INDEX IF NOT EXISTS idx_index_roots_path ON index_roots(root_path)", cancellationToken).ConfigureAwait(false);
diff --git a/tests/FileSearch.Core.Tests/FileIndexTests.cs b/tests/FileSearch.Core.Tests/FileIndexTests.cs
index c749a39..2a947f4 100644
--- a/tests/FileSearch.Core.Tests/FileIndexTests.cs
+++ b/tests/FileSearch.Core.Tests/FileIndexTests.cs
@@ -1258,6 +1258,31 @@ public async Task CurrentSchemaWithMissingColumnsIsTreatedAsMissingUntilRebuilt(
         Assert.EndsWith("shape-rebuilt.txt", hit.Path);
     }
 
+    [Fact]
+    public async Task CurrentSchemaStoresUtcTicksAsBigInt()
+    {
+        File.WriteAllText(Path.Combine(_root, "bigint-schema.txt"), "bigint schema needle\n");
+        await BuildAsync();
+
+        const long largeTickValue = 639219823516075047;
+        await using var db = await Database.OpenAsync(_dbPath, TestContext.Current.CancellationToken);
+        await db.ExecuteAsync($"UPDATE index_roots SET indexed_utc_ticks = {largeTickValue}", TestContext.Current.CancellationToken);
+        await db.ExecuteAsync($"UPDATE index_volumes SET last_checked_utc_ticks = {largeTickValue}", TestContext.Current.CancellationToken);
+        await db.ExecuteAsync($"UPDATE files SET created_utc_ticks = {largeTickValue}", TestContext.Current.CancellationToken);
+
+        await AssertAnyRowMatchesAsync("index_roots", "indexed_utc_ticks");
+        await AssertAnyRowMatchesAsync("files", "created_utc_ticks");
+
+        async Task AssertAnyRowMatchesAsync(string table, string column)
+        {
+            await using var result = await db.ExecuteAsync(
+                $"SELECT COUNT(*) FROM {table} WHERE {column} = {largeTickValue}",
+                TestContext.Current.CancellationToken);
+            Assert.True(await result.MoveNextAsync(TestContext.Current.CancellationToken));
+            Assert.True(result.Current[0].AsInteger > 0);
+        }
+    }
+
     [Fact]
     public async Task IndexedSearchToleratesWalCleanupContention()
     {