diff --git a/keyserver/src/updaters/user-acknowledgment-updater.js b/keyserver/src/updaters/user-acknowledgment-updater.js
new file mode 100644
--- /dev/null
+++ b/keyserver/src/updaters/user-acknowledgment-updater.js
@@ -0,0 +1,38 @@
+// @flow
+
+import { policies } from 'lib/facts/policies.js';
+
+import { dbQuery, SQL } from '../database/database.js';
+import type { Viewer } from '../session/viewer.js';
+
+async function userAcknowledgmentUpdater(viewer: Viewer) {
+  if (!viewer.loggedIn) {
+    return;
+  }
+
+  const [userPolicies] = await dbQuery(SQL`
+    SELECT policy, confirmed 
+    FROM policy_acknowledgments 
+    WHERE user = ${viewer.data.id}
+  `);
+
+  const time = Date.now();
+  const updates = policies.map(policy => {
+    const userPolicyData = userPolicies.find(row => row.policy === policy);
+    if (userPolicyData?.confirmed) {
+      return;
+    }
+
+    return dbQuery(SQL`
+      INSERT INTO policy_acknowledgments (user, policy, date, confirmed)
+        VALUES (${viewer.data.id}, ${policy}, ${time}, 1)
+        ON DUPLICATE KEY UPDATE
+         SET confirmed = 1, date = ${time}
+         WHERE user = ${viewer.data.id} AND policy = ${policy};
+    `);
+  });
+
+  await Promise.all(updates);
+}
+
+export { userAcknowledgmentUpdater };