diff --git a/requirements.txt b/requirements.txt
index f28f090..4dbdb3f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ flask-limiter>=3.8,<4.0
 
 # Production server
 waitress>=3.0,<4.0
-gunicorn>=22.0,<23.0
+gunicorn>=25.3.0,<26.0
 
 # Utilities
 qrcode[pil]>=7.4,<8.0