diff --git a/pyproject.toml b/pyproject.toml
index e674fba6..3a212d4c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,7 +31,7 @@ dependencies = [
 
 [project.optional-dependencies]
 tests = [
-    "grpcio==1.67.1",
+    "grpcio==1.68.1",
     "protobuf==5.28.0",
     "pytest==8.3.4",
     "pytest-cov==6.0.0",