diff --git a/requirements.txt b/requirements.txt
index b3c277ee..471d18c7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
-grpcio
-grpcio-tools
+grpcio>=1.47.0
+grpcio-tools>=1.47.0
 cygrpc
 flask
 pyOpenSSL
@@ -7,5 +7,5 @@ PyJWT
 requests
 more_itertools
 prometheus-flask-exporter
-cs3apis>=0.1.dev89
+cs3apis>=0.1.dev95
 waitress