diff --git a/requirements-dev.txt b/requirements-dev.txt
index fa2157a..5e23370 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -52,7 +52,7 @@ tomli==2.0.1
 
 tomlkit==0.12.4
 
-types-python-dateutil==2.8.19.20240311
+types-python-dateutil==2.9.0.20240315
 
 typing-extensions==4.10.0