diff --git a/keyserver/src/database/migration-config.js b/keyserver/src/database/migration-config.js
--- a/keyserver/src/database/migration-config.js
+++ b/keyserver/src/database/migration-config.js
@@ -63,6 +63,17 @@
       );
     },
   ],
+  [
+    8,
+    async () => {
+      await dbQuery(
+        SQL`
+          ALTER TABLE users
+            ADD COLUMN IF NOT EXISTS ethereum_address char(42) DEFAULT NULL;
+        `,
+      );
+    },
+  ],
 ]);
 const newDatabaseVersion: number = Math.max(...migrations.keys());
 
diff --git a/keyserver/src/database/setup-db.js b/keyserver/src/database/setup-db.js
--- a/keyserver/src/database/setup-db.js
+++ b/keyserver/src/database/setup-db.js
@@ -185,6 +185,7 @@
         username varchar(${usernameMaxLength}) COLLATE utf8mb4_bin NOT NULL,
         hash char(60) COLLATE utf8mb4_bin DEFAULT NULL,
         avatar varchar(191) COLLATE utf8mb4_bin DEFAULT NULL,
+        ethereum_address char(42) DEFAULT NULL,
         creation_time bigint(20) NOT NULL
       ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin;