diff --git a/setup.py b/setup.py
index ac4f4158d..a3970fe19 100644
--- a/setup.py
+++ b/setup.py
@@ -71,7 +71,7 @@
     "azure_functions_worker._thirdparty",
 ]
 
-INSTALL_REQUIRES = ["azure-functions==1.19.0b3"]
+INSTALL_REQUIRES = ["azure-functions==1.19.0b3", "python-dateutil~=2.8.2"]
 
 if sys.version_info[:2] == (3, 7):
     INSTALL_REQUIRES.extend(
@@ -108,8 +108,7 @@
         "opencv-python",
         "pandas",
         "numpy",
-        "pre-commit",
-        "python-dateutil~=2.8.2"
+        "pre-commit"
     ]
 }