diff --git a/Makefile b/Makefile
index 750d2f68..dab47f4e 100644
--- a/Makefile
+++ b/Makefile
@@ -26,7 +26,7 @@
 #
 
 # Current version of the project.
-VERSION ?= v0.1.4
+VERSION ?= v0.2.1
 
 # This repo's root import path (under GOPATH).
 ROOT := github.com/caicloud/rudder
@@ -38,7 +38,7 @@ TARGETS := controller
 # The final built images are:
 #   $[REGISTRY]/$[IMAGE_PREFIX]$[TARGET]$[IMAGE_SUFFIX]:$[VERSION]
 # $[REGISTRY] is an item from $[REGISTRIES], $[TARGET] is an item from $[TARGETS].
-IMAGE_PREFIX ?= $(strip rudder-)
+IMAGE_PREFIX ?= $(strip release-)
 IMAGE_SUFFIX ?= $(strip )
 
 # Container registries.
diff --git a/cmd/controller/app/controllers.go b/cmd/controller/app/controllers.go
index 09ecdc7d..62ed44b6 100644
--- a/cmd/controller/app/controllers.go
+++ b/cmd/controller/app/controllers.go
@@ -10,7 +10,8 @@ import (
 )
 
 // KnownControllers contains names of controllers
-var KnownControllers = []string{"release-controller", "status-controller", "garbage-collector"}
+// var KnownControllers = []string{"release-controller", "status-controller", "garbage-collector"}
+var KnownControllers = []string{"release-controller", "status-controller"}
 
 // InitFunc is used to launch a particular controller.
 type InitFunc func(ctx ControllerContext) error
@@ -20,7 +21,7 @@ func NewControllerInitializers(availableControllers []string) (map[string]InitFu
 	allControllers := map[string]InitFunc{
 		"release-controller": startReleaseController,
 		"status-controller":  startStatusController,
-		"garbage-collector":  startGCController,
+		// "garbage-collector":  startGCController,
 	}
 
 	result := make(map[string]InitFunc)