diff --git a/ansys/api/additive/VERSION b/ansys/api/additive/VERSION
index bc3ea55..59bde44 100644
--- a/ansys/api/additive/VERSION
+++ b/ansys/api/additive/VERSION
@@ -1 +1 @@
-1.6.0-dev7
\ No newline at end of file
+1.6.0-dev8
\ No newline at end of file
diff --git a/setup.py b/setup.py
index b867e69..a82be59 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,<5"],
+        install_requires=["grpcio~=1.47", "protobuf>=3.19,<6"],
         packages=setuptools.find_namespace_packages(
             ".", include=("ansys.*", "google.*")
         ),