diff --git a/pyproject.toml b/pyproject.toml
index 929905d4..ac475317 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -17,7 +17,7 @@ dependencies = [
     "anyio>=4.6.0",
     "grpcio>=1.66",
     "grpcio-health-checking>=1.66",
-    "protobuf>=5.28,<7.0",
+    "protobuf>=7.35,<7.36",
     "oauthlib>=3.1.0",
     "requests-oauthlib>=1.3.0,<3.0.0",
     "typing-extensions>=4.11.0",