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
@@ -578,6 +578,11 @@
       }
     },
   ],
+  [
+    47,
+    () =>
+      dbQuery(SQL`ALTER TABLE cookies MODIFY COLUMN hash char(64) NOT 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
@@ -32,7 +32,7 @@
     SQL`
       CREATE TABLE cookies (
         id bigint(20) NOT NULL,
-        hash char(60) NOT NULL,
+        hash char(64) NOT NULL,
         user varchar(255) CHARSET latin1 COLLATE latin1_bin DEFAULT NULL,
         platform varchar(255) DEFAULT NULL,
         creation_time bigint(20) NOT NULL,