diff --git a/pyproject.toml b/pyproject.toml
index 17ee303..b91e194 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,7 +24,7 @@ classifiers = [
 python = "^3.8"
 protobuf = "5.28.1"
 grpcio = "1.66.2"
-grpcio-tools = "1.66.1"
+grpcio-tools = "1.66.2"
 jsonpickle = ">=3.0,<3.4"
 pymitter = ">=0.4,<0.6"
 typing-extensions = ">=4.11,<4.13"