diff --git a/requirements.txt b/requirements.txt
index b8a1cc0..4efb6f6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 grpcio==1.30.0
-grpcio-tools==1.31.0
+grpcio-tools==1.66.1
 requests==2.24.0
 prometheus_client==0.8.0
 protobuf==3.12.2