diff --git a/src/SQLite.cs b/src/SQLite.cs
index 5b6941c3..7157b072 100644
--- a/src/SQLite.cs
+++ b/src/SQLite.cs
@@ -114,6 +114,7 @@ public static NotNullConstraintViolationException New (SQLiteException exception
 	public enum SQLiteOpenFlags
 	{
 		ReadOnly = 1, ReadWrite = 2, Create = 4,
+		Uri = 0x40, Memory = 0x80,
 		NoMutex = 0x8000, FullMutex = 0x10000,
 		SharedCache = 0x20000, PrivateCache = 0x40000,
 		ProtectionComplete = 0x00100000,