diff --git a/migrations/v5.go b/migrations/v5.go
index 0dc5129..dc404e7 100644
--- a/migrations/v5.go
+++ b/migrations/v5.go
@@ -20,30 +20,30 @@ func oauthSlack(db *datastore) error {
 					Column(
 						"provider",
 						wf_db.ColumnTypeVarChar,
-						wf_db.OptionalInt{Set: true, Value: 24,})).
+						wf_db.OptionalInt{Set: true, Value: 24})),
+			dialect.
+				AlterTable("oauth_client_states").
 				AddColumn(dialect.
 					Column(
 						"client_id",
 						wf_db.ColumnTypeVarChar,
-						wf_db.OptionalInt{Set: true, Value: 128,})),
+						wf_db.OptionalInt{Set: true, Value: 128})),
 			dialect.
 				AlterTable("oauth_users").
-				ChangeColumn("remote_user_id",
-					dialect.
-						Column(
-							"remote_user_id",
-							wf_db.ColumnTypeVarChar,
-							wf_db.OptionalInt{Set: true, Value: 128,})).
 				AddColumn(dialect.
 					Column(
 						"provider",
 						wf_db.ColumnTypeVarChar,
-						wf_db.OptionalInt{Set: true, Value: 24,})).
+						wf_db.OptionalInt{Set: true, Value: 24})),
+			dialect.
+				AlterTable("oauth_users").
 				AddColumn(dialect.
 					Column(
 						"client_id",
 						wf_db.ColumnTypeVarChar,
-						wf_db.OptionalInt{Set: true, Value: 128,})).
+						wf_db.OptionalInt{Set: true, Value: 128})),
+			dialect.
+				AlterTable("oauth_users").
 				AddColumn(dialect.
 					Column(
 						"access_token",
@@ -51,6 +51,18 @@ func oauthSlack(db *datastore) error {
 						wf_db.OptionalInt{Set: true, Value: 512,})),
 			dialect.CreateUniqueIndex("oauth_users", "oauth_users", "user_id", "provider", "client_id"),
 		}
+
+		if dialect != wf_db.DialectSQLite {
+			// This updates the length of the `remote_user_id` column. It isn't needed for SQLite databases.
+			builders = append(builders, dialect.
+				AlterTable("oauth_users").
+				ChangeColumn("remote_user_id",
+					dialect.
+						Column(
+							"remote_user_id",
+							wf_db.ColumnTypeVarChar,
+							wf_db.OptionalInt{Set: true, Value: 128})))
+		}
 		for _, builder := range builders {
 			query, err := builder.ToSQL()
 			if err != nil {