diff --git a/python/pyproject.toml b/python/pyproject.toml
index 993b4236b..5ca088b3d 100644
--- a/python/pyproject.toml
+++ b/python/pyproject.toml
@@ -21,7 +21,8 @@ dependencies = [
     "grpcio~=1.13",
     "PyYAML~=6.0",
     "pandas~=2.0",
-    "protobuf>=4.0",
+    "pyarrow>=17.0.0", # sift_client, older version to support py3.8
+    "protobuf>=5.0",
     "pydantic~=2.10",
     # Support python 3.9+ typing in older versons of python.
     "eval-type-backport~=0.2",
@@ -32,7 +33,7 @@ dependencies = [
     # May move these to optional dependencies in the future.
     "pandas-stubs~=2.0",
     "types-PyYAML~=6.0",
-    "types-protobuf>=4.0",
+    "types-protobuf>=5.0",
     "typing-extensions~=4.6",
     "types-requests~=2.25",
 ]
@@ -48,7 +49,6 @@ Changelog = "https://github.com/sift-stack/sift/tree/main/python/CHANGELOG.md"
 development = [
     "grpcio-testing~=1.13",
     "mypy==1.10.0",
-    "pyarrow>=17.0.0", # sift_client, older version to support py3.8
     "pyright==1.1.386",
     "pytest==8.2.2",
     "pytest-asyncio==0.23.7",