for testing

Author: parthea

samples/snippets/noxfile.py

@@ -216,7 +216,7 @@ def _session_tests(
         if post_install:
             post_install(session)
 
-        session.install("--upgrade", "protobuf")
+        session.install("--upgrade", "protobuf", "--no-binary", "protobuf")
         session.install("proto-plus==1.20.1")
 
         session.run(