install requires protobuf

Author: NRHelmi

railib/__init__.py

@@ -12,5 +12,5 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version_info__ = (0, 6, 7)
+__version_info__ = (0, 6, 8)
 __version__ = ".".join(map(str, __version_info__))

setup.py

@@ -34,7 +34,8 @@
     install_requires=[
         "ed25519==1.5",
         "pyarrow>=6.0.1",
-        "requests-toolbelt==0.9.1"],
+        "requests-toolbelt==0.9.1",
+        "protobuf==3.20.1"],
     license="http://www.apache.org/licenses/LICENSE-2.0",
     long_description="Enables access to the RelationalAI REST APIs from Python",
     long_description_content_type="text/markdown",