diff --git a/packages/pynumaflow/poetry.lock b/packages/pynumaflow/poetry.lock
index 5cf7fb15..fb73609f 100644
--- a/packages/pynumaflow/poetry.lock
+++ b/packages/pynumaflow/poetry.lock
@@ -2311,4 +2311,4 @@ type = ["pytest-mypy"]
 [metadata]
 lock-version = "2.1"
 python-versions = ">=3.9, <3.15"
-content-hash = "fd5a94a16508f922e5799b33c651472e0b329834d901612afcf40808a2c96cfd"
+content-hash = "ef4024475fff7bbc979f2278a6f494a2cdf767624a673900fd4ea5e726238e94"
diff --git a/packages/pynumaflow/pyproject.toml b/packages/pynumaflow/pyproject.toml
index 343e5bc1..07bd29ad 100644
--- a/packages/pynumaflow/pyproject.toml
+++ b/packages/pynumaflow/pyproject.toml
@@ -28,7 +28,7 @@ grpcio = "^1.48.1"
 grpcio-tools = "^1.48.1"
 google-api-core = "^2.11.0"
 grpcio-status = "^1.48.1"
-protobuf = ">=3.20,<7.0"
+protobuf = ">=6.31.1,<7.0"
 aiorun = "^2023.7"
 uvloop = ">=0.21.0"
 psutil = "^6.0.0"