diff --git a/upgradescripts/2_ratelimitingsignin.php b/upgradescripts/2_ratelimitingsignin.php
new file mode 100644
index 0000000..5b469e5
--- /dev/null
+++ b/upgradescripts/2_ratelimitingsignin.php
@@ -0,0 +1,27 @@
+<?php
+// @description: Program used to upgrade the database after the implementation of issue #39.
+
+require_once(__DIR__."/../core.php");
+
+if (php_sapi_name() != "cli") {
+  security::notFound();
+  exit();
+}
+
+echo "========================\n";
+echo "2_ratelimitingsignin.php\n";
+echo "========================\n\n";
+
+echo "[info] Adding new database schema...\n";
+if (!mysqli_query($con, "CREATE TABLE signinattempts (
+  username VARCHAR(100) NOT NULL,
+  KEY username (username),
+  remoteip VARBINARY(16) NOT NULL,
+  KEY remoteip (remoteip),
+  remoteipblock VARBINARY(16) NOT NULL,
+  KEY remoteipblock (remoteipblock),
+  signinattempttime DATETIME NOT NULL,
+  KEY signinattempttime (signinattempttime)
+)")) die("[fatal error] Couldn't add new database: ".mysqli_error($con)."\n");
+
+echo "[info] Done\n";