diff --git a/tables.sql b/tables.sql
index 99f770e..9b022d3 100644
--- a/tables.sql
+++ b/tables.sql
@@ -12,7 +12,7 @@ create table FILE ( EID integer, SIZE_MB integer, HASH varchar(34), THUMBNAIL va
     constraint PK_FILE_ID primary key(EID), 
     constraint FK_FILE_ENTRY_ID foreign key (EID) references ENTRY(ID) );
 
-create table DIR ( EID integer, PATH_PREFIX varchar(256), NUM_FILES integer, LAST_IMPORT_DATE float,
+create table DIR ( EID integer, PATH_PREFIX varchar(256), NUM_FILES integer, LAST_IMPORT_DATE float, LAST_HASH_DATE float,
     constraint PK_DIR_EID primary key(EID),
     constraint FK_DIR_ENTRY_ID foreign key (EID) references ENTRY(ID) );