diff --git a/Elwig/Helpers/AppDbUpdater.cs b/Elwig/Helpers/AppDbUpdater.cs
index d78e4ea..2be5297 100644
--- a/Elwig/Helpers/AppDbUpdater.cs
+++ b/Elwig/Helpers/AppDbUpdater.cs
@@ -4,12 +4,12 @@ using System;
 namespace Elwig.Helpers {
     public static class AppDbUpdater {
 
-        public static readonly int RequiredSchemaVersion = 7;
+        public static readonly int RequiredSchemaVersion = 8;
 
         private static int _versionOffset = 0;
         private static readonly Action<SqliteConnection>[] _updaters = new[] {
             UpdateDbSchema_1_To_2, UpdateDbSchema_2_To_3, UpdateDbSchema_3_To_4, UpdateDbSchema_4_To_5,
-            UpdateDbSchema_5_To_6, UpdateDBSchema_6_To_7
+            UpdateDbSchema_5_To_6, UpdateDBSchema_6_To_7, UpdateDbSchema_7_To_8
         };
 
         private static void ExecuteNonQuery(SqliteConnection cnx, string sql) {
@@ -540,5 +540,82 @@ namespace Elwig.Helpers {
                 WHERE diff < 0;
                 """);
         }
+
+        private static void UpdateDbSchema_7_To_8(SqliteConnection cnx) {
+            ExecuteNonQuery(cnx, """
+                INSERT INTO wb_gem
+                SELECT a.gkz, 'WLNO'
+                FROM AT_gem a
+                    LEFT JOIN wb_gem w ON w.gkz = a.gkz
+                WHERE a.gkz / 10000 = 3 AND w.hkid IS NULL;
+                """);
+            ExecuteNonQuery(cnx, """
+                INSERT INTO wb_gem
+                SELECT gkz, 'SLVL'
+                FROM AT_gem
+                WHERE gkz / 100 IN (617, 622, 623);
+                """);
+            ExecuteNonQuery(cnx, """
+                INSERT INTO wb_gem
+                SELECT gkz, 'SLSS'
+                FROM AT_gem
+                WHERE gkz / 100 = 610;
+                """);
+            ExecuteNonQuery(cnx, """
+                UPDATE wb_gem
+                SET hkid = 'SLVL'
+                WHERE gkz IN (61007, 61052, 61001, 61055, 61027, 61057, 61008, 61057);
+                """);
+            ExecuteNonQuery(cnx, """
+                INSERT INTO wb_gem
+                SELECT gkz, 'SLWS'
+                FROM AT_gem
+                WHERE gkz / 100 IN (603, 616) OR gkz IN (60101, 60663, 60651, 60659, 60664, 60647, 60641, 60639, 60665, 60669, 60618, 60629, 60608, 60670, 60624, 60660, 60656, 60655);
+                """);
+            ExecuteNonQuery(cnx, """
+                INSERT INTO wb_gem
+                SELECT g.gkz, 'SLVL'
+                FROM AT_gem g
+                    LEFT JOIN wb_gem w ON w.gkz = g.gkz
+                WHERE g.gkz / 100 = 606 AND w.hkid IS NULL;
+                """);
+            ExecuteNonQuery(cnx, """
+                INSERT INTO wb_gem
+                SELECT g.gkz, 'SLST'
+                FROM AT_gem g
+                    LEFT JOIN wb_gem w ON w.gkz = g.gkz
+                WHERE g.gkz / 10000 = 6 AND w.hkid IS NULL;
+                """);
+            ExecuteNonQuery(cnx, """
+                INSERT INTO wb_gem
+                SELECT gkz, 'BLOO'
+                FROM AT_gem
+                WHERE gkz / 10000 = 4;
+                """);
+            ExecuteNonQuery(cnx, """
+                INSERT INTO wb_gem
+                SELECT gkz, 'BLKA'
+                FROM AT_gem
+                WHERE gkz / 10000 = 2;
+                """);
+            ExecuteNonQuery(cnx, """
+                INSERT INTO wb_gem
+                SELECT gkz, 'BLSB'
+                FROM AT_gem
+                WHERE gkz / 10000 = 5;
+                """);
+            ExecuteNonQuery(cnx, """
+                INSERT INTO wb_gem
+                SELECT gkz, 'BLTI'
+                FROM AT_gem
+                WHERE gkz / 10000 = 7;
+                """);
+            ExecuteNonQuery(cnx, """
+                INSERT INTO wb_gem
+                SELECT gkz, 'BLVO'
+                FROM AT_gem
+                WHERE gkz / 10000 = 8;
+                """);
+        }
     }
 }