diff --git a/setup.py b/setup.py
index 8aa0671c..2ecf05e3 100644
--- a/setup.py
+++ b/setup.py
@@ -106,7 +106,7 @@
 ]
 
 INSTALL_REQUIRES = [
-    "azure-functions==1.18.0b3",
+    "azure-functions==1.18.0b4",
     "python-dateutil~=2.8.2"
 ]