diff --git a/api-client/requirements.txt b/api-client/requirements.txt
index 54c707e40..f8edfe152 100644
--- a/api-client/requirements.txt
+++ b/api-client/requirements.txt
@@ -1,4 +1,4 @@
 # Please do not edit this file, edit the setup.py file!
 # This file is auto-generated by tools/extract_requirements.py.
-python-dateutil>=2.7.0
+python-dateutil>=2.8.1,<2.9
 requests>=2.25.1,<2.29
diff --git a/api-client/setup.py b/api-client/setup.py
index 5cf70faab..50fd0978f 100644
--- a/api-client/setup.py
+++ b/api-client/setup.py
@@ -22,7 +22,7 @@ setup(
     packages=["libretime_api_client"],
     python_requires=">=3.6",
     install_requires=[
-        "python-dateutil>=2.7.0",
+        "python-dateutil>=2.8.1,<2.9",
         "requests>=2.25.1,<2.29",
     ],
     extras_require={