diff --git a/requirements.txt b/requirements.txt
index 7179442b0..74b82c989 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ attrs==25.3.0
 awesomeversion==25.8.0
 blockbuster==1.5.25
 brotli==1.1.0
-ciso8601==2.3.2
+ciso8601==2.3.3
 colorlog==6.9.0
 cpe==1.3.1
 cryptography==45.0.6