diff --git a/.gitmodules b/.gitmodules
index d541b57..8287008 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,4 +1,4 @@
 [submodule "drucker/grpc"]
 	path = drucker/grpc
 	url = https://github.com/rekcurd/drucker-grpc-proto.git
-	branch = master
+	branch = v0.4.5
diff --git a/drucker/_version.py b/drucker/_version.py
index 7f3da84..68eb9b6 100644
--- a/drucker/_version.py
+++ b/drucker/_version.py
@@ -1 +1 @@
-__version__ = '0.4.5a'
+__version__ = '0.4.5'
diff --git a/drucker/grpc b/drucker/grpc
index efe712b..bdafc7c 160000
--- a/drucker/grpc
+++ b/drucker/grpc
@@ -1 +1 @@
-Subproject commit efe712bb6c47f8d5f407ac7bc86e35dba0565b56
+Subproject commit bdafc7c8c4909dc0e8abef3718c61f44c709c422