diff --git a/testsuite/requirements-grpc-3.txt b/testsuite/requirements-grpc-3.txt
index 9a539aed0450..4327613023f4 100644
--- a/testsuite/requirements-grpc-3.txt
+++ b/testsuite/requirements-grpc-3.txt
@@ -1,3 +1,3 @@
-grpcio >= 1.32.0, <= 1.49.0
+grpcio >= 1.32.0, <= 1.66.0
 grpcio-tools >= 1.32.0, <= 1.49.0
 protobuf >= 3.12.0, < 4.0dev