diff --git a/src/emailservice/requirements.txt b/src/emailservice/requirements.txt
index 42eea29..e3800b2 100644
--- a/src/emailservice/requirements.txt
+++ b/src/emailservice/requirements.txt
@@ -14,9 +14,9 @@ google-cloud-core==0.28.1
 google-cloud-trace==0.19.0
 googleapis-common-protos==1.5.3
 grpc-google-iam-v1==0.11.4
-grpcio==1.15.0
-grpcio-health-checking==1.15.0
-grpcio-tools==1.15.0
+grpcio==1.12.1
+grpcio-health-checking==1.14.1
+grpcio-tools==1.12.1
 idna==2.7
 ipaddress==1.0.22
 jeepney==0.4