diff --git a/requirements.txt b/requirements.txt
index 3c178f750de..a2a799b0d2b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ atomicwrites-homeassistant==1.4.1
 attrs==23.1.0
 awesomeversion==23.8.0
 brotli==1.1.0
-ciso8601==2.3.0
+ciso8601==2.3.1
 colorlog==6.7.0
 cpe==1.2.1
 cryptography==41.0.4