diff --git a/src/Zenith/DB.hs b/src/Zenith/DB.hs
index 26cf8d5..50d64f8 100644
--- a/src/Zenith/DB.hs
+++ b/src/Zenith/DB.hs
@@ -249,7 +249,7 @@ share
   AddressBook
     network ZcashNetDB
     descrip T.Text
-    address HexStringDB
+    address T.Text
     UniqueABA address
     deriving Show Eq
     |]
@@ -1484,5 +1484,24 @@ getAdrBook pool n =
       where_ (adrbook ^. AddressBookNetwork ==. val (ZcashNetDB n))
       pure adrbook
 
+-- | Save a new address into AddressBook 
+saveAdrsInAdrBook ::
+     ConnectionPool -- ^ The database path to use
+  -> AddressBook -- ^ The address to add to the database
+  -> IO (Maybe (Entity AddressBook))
+saveAdrsInAdrBook pool a =
+  runNoLoggingT $
+  PS.retryOnBusy $ flip PS.runSqlPool pool $ insertUniqueEntity a
+
+-- | Update an existing address into AddressBook 
+updateAdrsInAdrBook :: ConnectionPool -> T.Text -> AddressBookId -> IO ()
+updateAdrsInAdrBook pool a i = do
+  runNoLoggingT $
+    PS.retryOnBusy $
+    flip PS.runSqlPool pool $ do
+      update $ \ab -> do
+        set ab [AddressBookAddress =. val a]
+        where_ $ ab ^. AddressBookId ==. val i
+
 rmdups :: Ord a => [a] -> [a]
 rmdups = map head . group . sort