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
@@ -539,6 +539,24 @@
       );
     },
   ],
+  [
+    45,
+    () =>
+      dbQuery(
+        SQL`
+          ALTER TABLE uploads
+            CHARSET utf8mb4 COLLATE utf8mb4_bin,
+            MODIFY COLUMN type varchar(255)
+              CHARSET latin1 COLLATE latin1_swedish_ci NOT NULL,
+            MODIFY COLUMN filename varchar(255)
+              CHARSET utf8mb4 COLLATE utf8mb4_bin NOT NULL,
+            MODIFY COLUMN mime varchar(255)
+              CHARSET latin1 COLLATE latin1_swedish_ci NOT NULL,
+            MODIFY COLUMN secret varchar(255)
+              CHARSET latin1 COLLATE latin1_swedish_ci 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
@@ -183,14 +183,14 @@
         thread bigint(20) DEFAULT NULL,
         uploader varchar(255) CHARSET latin1 COLLATE latin1_bin NOT NULL,
         container bigint(20) DEFAULT NULL,
-        type varchar(255) NOT NULL,
+        type varchar(255) CHARSET latin1 COLLATE latin1_swedish_ci NOT NULL,
         filename varchar(255) NOT NULL,
-        mime varchar(255) NOT NULL,
+        mime varchar(255) CHARSET latin1 COLLATE latin1_swedish_ci NOT NULL,
         content longblob NOT NULL,
-        secret varchar(255) NOT NULL,
+        secret varchar(255) CHARSET latin1 COLLATE latin1_swedish_ci NOT NULL,
         creation_time bigint(20) NOT NULL,
         extra json DEFAULT NULL
-      ) ENGINE=InnoDB DEFAULT CHARSET=utf8;
+      ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin;
 
       CREATE TABLE users (
         id varchar(255) CHARSET latin1 COLLATE latin1_bin NOT NULL,