diff --git a/sdk/pyproject.toml b/sdk/pyproject.toml
index 9c299e4..bda9e77 100644
--- a/sdk/pyproject.toml
+++ b/sdk/pyproject.toml
@@ -22,7 +22,7 @@ classifiers = [
     "Topic :: Software Development :: Libraries :: Python Modules",
 ]
 dependencies = [
-    "grpcio>=1.80.0,<2",
+    "grpcio>=1.81.0,<2",
     "protobuf>=6.31.0,<7",
     "googleapis-common-protos>=1.75.0,<2",
 ]