diff --git a/api/api.go b/api/api.go
index 9528fe72..efc83a7c 100644
--- a/api/api.go
+++ b/api/api.go
@@ -1,4 +1,4 @@
-// Copyright 2015 clair authors
+// Copyright 2017 clair authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -27,7 +27,7 @@ import (
 
 	"github.com/coreos/clair/api/context"
 	"github.com/coreos/clair/config"
-	"github.com/coreos/clair/utils"
+	"github.com/coreos/clair/pkg/stopper"
 	"github.com/coreos/pkg/capnslog"
 )
 
@@ -35,7 +35,7 @@ const timeoutResponse = `{"Error":{"Message":"Clair failed to respond within the
 
 var log = capnslog.NewPackageLogger("github.com/coreos/clair", "api")
 
-func Run(config *config.APIConfig, ctx *context.RouteContext, st *utils.Stopper) {
+func Run(config *config.APIConfig, ctx *context.RouteContext, st *stopper.Stopper) {
 	defer st.End()
 
 	// Do not run the API service if there is no config.
@@ -68,7 +68,7 @@ func Run(config *config.APIConfig, ctx *context.RouteContext, st *utils.Stopper)
 	log.Info("main API stopped")
 }
 
-func RunHealth(config *config.APIConfig, ctx *context.RouteContext, st *utils.Stopper) {
+func RunHealth(config *config.APIConfig, ctx *context.RouteContext, st *stopper.Stopper) {
 	defer st.End()
 
 	// Do not run the API service if there is no config.
@@ -94,8 +94,8 @@ func RunHealth(config *config.APIConfig, ctx *context.RouteContext, st *utils.St
 
 // listenAndServeWithStopper wraps graceful.Server's
 // ListenAndServe/ListenAndServeTLS and adds the ability to interrupt them with
-// the provided utils.Stopper
-func listenAndServeWithStopper(srv *graceful.Server, st *utils.Stopper, certFile, keyFile string) {
+// the provided stopper.Stopper.
+func listenAndServeWithStopper(srv *graceful.Server, st *stopper.Stopper, certFile, keyFile string) {
 	go func() {
 		<-st.Chan()
 		srv.Stop(0)
diff --git a/cmd/clair/main.go b/cmd/clair/main.go
index 750c5fc6..3fa21556 100644
--- a/cmd/clair/main.go
+++ b/cmd/clair/main.go
@@ -32,8 +32,8 @@ import (
 	"github.com/coreos/clair/config"
 	"github.com/coreos/clair/database"
 	"github.com/coreos/clair/notifier"
+	"github.com/coreos/clair/pkg/stopper"
 	"github.com/coreos/clair/updater"
-	"github.com/coreos/clair/utils"
 
 	// Register database driver.
 	_ "github.com/coreos/clair/database/pgsql"
@@ -91,7 +91,7 @@ func stopCPUProfiling(f *os.File) {
 // Boot starts Clair instance with the provided config.
 func Boot(config *config.Config) {
 	rand.Seed(time.Now().UnixNano())
-	st := utils.NewStopper()
+	st := stopper.NewStopper()
 
 	// Open database
 	db, err := database.Open(config.Database)
diff --git a/notifier/notifier.go b/notifier/notifier.go
index ad3619fa..07ec8b7c 100644
--- a/notifier/notifier.go
+++ b/notifier/notifier.go
@@ -29,7 +29,7 @@ import (
 	"github.com/coreos/clair/database"
 	"github.com/coreos/clair/ext/notification"
 	"github.com/coreos/clair/pkg/commonerr"
-	"github.com/coreos/clair/utils"
+	"github.com/coreos/clair/pkg/stopper"
 )
 
 const (
@@ -59,7 +59,7 @@ func init() {
 }
 
 // Run starts the Notifier service.
-func Run(config *config.NotifierConfig, datastore database.Datastore, stopper *utils.Stopper) {
+func Run(config *config.NotifierConfig, datastore database.Datastore, stopper *stopper.Stopper) {
 	defer stopper.End()
 
 	// Configure registered notifiers.
@@ -122,7 +122,7 @@ func Run(config *config.NotifierConfig, datastore database.Datastore, stopper *u
 	log.Info("notifier service stopped")
 }
 
-func findTask(datastore database.Datastore, renotifyInterval time.Duration, whoAmI string, stopper *utils.Stopper) *database.VulnerabilityNotification {
+func findTask(datastore database.Datastore, renotifyInterval time.Duration, whoAmI string, stopper *stopper.Stopper) *database.VulnerabilityNotification {
 	for {
 		// Find a notification to send.
 		notification, err := datastore.GetAvailableNotification(renotifyInterval)
@@ -148,7 +148,7 @@ func findTask(datastore database.Datastore, renotifyInterval time.Duration, whoA
 	}
 }
 
-func handleTask(n database.VulnerabilityNotification, st *utils.Stopper, maxAttempts int) (bool, bool) {
+func handleTask(n database.VulnerabilityNotification, st *stopper.Stopper, maxAttempts int) (bool, bool) {
 	// Send notification.
 	for senderName, sender := range notification.Senders() {
 		var attempts int
diff --git a/utils/stopper.go b/pkg/stopper/stopper.go
similarity index 97%
rename from utils/stopper.go
rename to pkg/stopper/stopper.go
index e2ed6322..e939aa2a 100644
--- a/utils/stopper.go
+++ b/pkg/stopper/stopper.go
@@ -1,4 +1,4 @@
-// Copyright 2015 clair authors
+// Copyright 2017 clair authors
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-package utils
+package stopper
 
 import (
 	"sync"
diff --git a/updater/updater.go b/updater/updater.go
index 0ae34970..267ea7fe 100644
--- a/updater/updater.go
+++ b/updater/updater.go
@@ -32,7 +32,7 @@ import (
 	"github.com/coreos/clair/database"
 	"github.com/coreos/clair/ext/vulnmdsrc"
 	"github.com/coreos/clair/ext/vulnsrc"
-	"github.com/coreos/clair/utils"
+	"github.com/coreos/clair/pkg/stopper"
 )
 
 const (
@@ -70,7 +70,7 @@ func init() {
 }
 
 // Run updates the vulnerability database at regular intervals.
-func Run(config *config.UpdaterConfig, datastore database.Datastore, st *utils.Stopper) {
+func Run(config *config.UpdaterConfig, datastore database.Datastore, st *stopper.Stopper) {
 	defer st.End()
 
 	// Do not run the updater if there is no config or if the interval is 0.