diff --git a/requirements-prod.txt b/requirements-prod.txt
index 8768840..fd83df6 100644
--- a/requirements-prod.txt
+++ b/requirements-prod.txt
@@ -7,7 +7,7 @@ pyOpenSSL>=24.0.0
 cryptography>=43.0.0,<51.0.0
 requests==2.34.2
 Jinja2==3.1.6
-filelock==3.32.7
+filelock==4.0.3
 pyotp==2.10.0
 
 # --- Core Logic ---