diff --git a/tests/Internal/Provider/FakeParserCacheProvider.php b/tests/Internal/Provider/FakeParserCacheProvider.php
index 69bd182cf..ccd3566ec 100644
--- a/tests/Internal/Provider/FakeParserCacheProvider.php
+++ b/tests/Internal/Provider/FakeParserCacheProvider.php
@@ -29,4 +29,8 @@ class FakeParserCacheProvider extends \Psalm\Internal\Provider\ParserCacheProvid
     public function cacheFileContents(string $file_path, string $file_contents): void
     {
     }
+
+    public function saveFileContentHashes(): void
+    {
+    }
 }