diff --git a/setup.py b/setup.py
index b685cd34f..e7916af19 100644
--- a/setup.py
+++ b/setup.py
@@ -107,18 +107,12 @@
 
 INSTALL_REQUIRES = [
     "azure-functions==1.15.1b1",
-    "python-dateutil~=2.8.2"
+    "python-dateutil~=2.8.2",
+    "protobuf~=4.22.0",
+    "grpcio-tools~=1.54.2",
+    "grpcio~=1.54.2"
 ]
 
-if sys.version_info[:3] < (3, 9, 0):
-    INSTALL_REQUIRES.extend(
-        ("protobuf~=3.19.3", "grpcio-tools~=1.43.0", "grpcio~=1.43.0")
-    )
-else:
-    INSTALL_REQUIRES.extend(
-        ("protobuf~=4.22.0", "grpcio-tools~=1.54.2", "grpcio~=1.54.2")
-    )
-
 EXTRA_REQUIRES = {
     "dev": [
         "azure-eventhub~=5.7.0",  # Used for EventHub E2E tests