diff --git a/ansys/api/additive/VERSION b/ansys/api/additive/VERSION
index fbcf992..12a2c52 100644
--- a/ansys/api/additive/VERSION
+++ b/ansys/api/additive/VERSION
@@ -1 +1 @@
-5.1.1-dev0
\ No newline at end of file
+5.1.2-dev0
diff --git a/pyproject.toml b/pyproject.toml
index 57d6e63..23aed5e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,3 +1,3 @@
 [build-system]
-requires = ["setuptools >= 42.0.0", "wheel", "ansys_tools_protoc_helper>=0.4.0"]
+requires = ["setuptools >= 42.0.0,<81", "wheel", "ansys_tools_protoc_helper>=0.4.0"]
 build-backend = "setuptools.build_meta:__legacy__"
diff --git a/setup.py b/setup.py
index a82be59..4d87b75 100644
--- a/setup.py
+++ b/setup.py
@@ -39,7 +39,7 @@
         url=f"https://github.com/ansys/{package_name}",
         license="MIT",
         python_requires=">=3.8,<4",
-        install_requires=["grpcio~=1.47", "protobuf>=3.19,<6"],
+        install_requires=["grpcio~=1.47", "protobuf>=3.19"],
         packages=setuptools.find_namespace_packages(
             ".", include=("ansys.*", "google.*")
         ),