diff --git a/requirements.txt b/requirements.txt
index 94aede5..a93b1aa 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
 # Package
-ciso8601==2.1.3
+ciso8601==2.3.2
 httpx==0.28.1
 zeep[async]==4.3.1