diff --git a/requirements/dev.txt b/requirements/dev.txt
index 5867ed5d..7e2a1ccc 100644
--- a/requirements/dev.txt
+++ b/requirements/dev.txt
@@ -8,6 +8,6 @@ types-chardet==5.0.4.6
 types-ujson==5.10.0.20240515
 types-PyYAML==6.0.12.20240808
 types-requests==2.32.0.20240712 # 2.31.0.7 introduced a regression
-types-python-dateutil==2.9.0.20240316
+types-python-dateutil==2.9.0.20240821
 ruff==0.6.2
 wheel==0.44.0
\ No newline at end of file