diff --git a/requirements.txt b/requirements.txt
index b8a1cc0..a21841d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 grpcio==1.30.0
 grpcio-tools==1.31.0
 requests==2.24.0
-prometheus_client==0.8.0
+prometheus_client==0.18.0
 protobuf==3.12.2