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
@@ -50,14 +50,19 @@
   [
     6,
     async () => {
-      await dbQuery(SQL`
+      await dbQuery(
+        SQL`
         ALTER TABLE users
           DROP COLUMN public_key,
           MODIFY hash char(60) COLLATE utf8mb4_bin DEFAULT NULL;
-  
-        ALTER TABLE sessions 
-          DROP COLUMN public_key;
-      `);
+      `,
+      );
+    },
+  ],
+  [
+    7,
+    async () => {
+      await dbQuery(SQL`ALTER TABLE sessions DROP COLUMN public_key;`);
     },
   ],
 ]);