diff --git a/backend/src/api/database-migration.ts b/backend/src/api/database-migration.ts
index df5091701..3ddf1dcc7 100644
--- a/backend/src/api/database-migration.ts
+++ b/backend/src/api/database-migration.ts
@@ -7,7 +7,7 @@ import cpfpRepository from '../repositories/CpfpRepository';
 import { RowDataPacket } from 'mysql2';
 
 class DatabaseMigration {
-  private static currentVersion = 78;
+  private static currentVersion = 81;
   private queryTimeout = 3600_000;
   private statisticsAddedIndexed = false;
   private uniqueLogs: string[] = [];
@@ -669,6 +669,21 @@ class DatabaseMigration {
       await this.$executeQuery('ALTER TABLE `prices` CHANGE `time` `time` datetime NOT NULL');
       await this.updateToSchemaVersion(78);
     }
+
+    if (databaseSchemaVersion < 79 && isBitcoin === true) {
+      await this.$executeQuery('TRUNCATE hashrates');
+      await this.updateToSchemaVersion(79);
+    }
+
+    if (databaseSchemaVersion < 80 && isBitcoin === true) {
+      await this.$executeQuery('TRUNCATE difficulty_adjustments');
+      await this.updateToSchemaVersion(80);
+    }
+
+    if (databaseSchemaVersion < 81 && isBitcoin === true) {
+      await this.$executeQuery(`UPDATE state SET string = NULL WHERE name = 'pools_json_sha'`);
+      await this.updateToSchemaVersion(81);
+    }
   }
 
   /**