diff --git a/pyproject.toml b/pyproject.toml
index cdba09cc..dfde4254 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,7 +26,7 @@ classifiers = [
     "Intended Audience :: Developers"
 ]
 dependencies = [
-     "azure-functions==1.22.0b3",
+     "azure-functions==1.22.0b4",
      "python-dateutil ~=2.9.0",
      "protobuf~=3.19.3; python_version == '3.7'",
      "protobuf~=4.25.3; python_version >= '3.8'",