diff --git a/bin/normalize-callmap.php b/bin/normalize-callmap.php
new file mode 100644
index 00000000000..10d16006d18
--- /dev/null
+++ b/bin/normalize-callmap.php
@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+require 'vendor/autoload.php';
+
+use DG\BypassFinals;
+use Psalm\Internal\Analyzer\ProjectAnalyzer;
+use Psalm\Internal\Provider\FileProvider;
+use Psalm\Internal\Provider\Providers;
+use Psalm\Tests\TestConfig;
+use Psalm\Type;
+
+BypassFinals::enable();
+
+new ProjectAnalyzer(new TestConfig, new Providers(new FileProvider));
+
+$codebase = ProjectAnalyzer::getInstance()->getCodebase();
+
+chdir(__DIR__.'/../');
+
+foreach (glob("dictionaries/CallMap*.php") as $file) {
+    $callMap = require $file;
+
+    array_walk_recursive($callMap, function (string &$type): void {
+        $type = Type::parseString($type === '' ? 'mixed' : $type)->getId(true);
+    });
+
+    file_put_contents($file, '<?php // phpcs:ignoreFile
+
+return '.var_export($callMap, true).';');
+}