diff --git a/WORKSPACE b/WORKSPACE
index 4c549bc..28e7522 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -63,9 +63,9 @@ http_archive(
 
 http_archive(
     name = "io_grpc_proto",
-    sha256 = "f081eba5884bf09051d27664aede4fc22bbaa77da477735d745bcef17bd088f1",
-    strip_prefix = "grpc-proto-ec886024c2f7b7f597ba89d5b7d60c3f94627b17",
-    urls = ["https://github.com/grpc/grpc-proto/archive/ec886024c2f7b7f597ba89d5b7d60c3f94627b17.tar.gz"],
+    sha256 = "684eef3227cebb72f98dab8773428e7d90b26fa069fa51a59eb3484623346017",
+    strip_prefix = "grpc-proto-374b488a7d1af3a448e8a62c6b2303cf4b926dc3",
+    urls = ["https://github.com/grpc/grpc-proto/archive/374b488a7d1af3a448e8a62c6b2303cf4b926dc3.tar.gz"],
 )
 
 http_archive(